diff --git a/Casks/1password-beta.rb b/Casks/1password-beta.rb
index 670e32cb7..ca3bf493f 100755
--- a/Casks/1password-beta.rb
+++ b/Casks/1password-beta.rb
@@ -4,8 +4,7 @@ cask '1password-beta' do
 
   # 1password.com was verified as official when first introduced to the cask
   url "https://c.1password.com/dist/1P/mac#{version.major}/1Password-#{version}.zip"
-  appcast "https://app-updates.agilebits.com/product_history/OPM#{version.major}",
-          checkpoint: '78086a6d237499c65b5b5c8efb32b452a4bafeb77814ea5875973626699aeba7'
+  appcast "https://app-updates.agilebits.com/product_history/OPM#{version.major}"
   name '1Password'
   homepage 'https://1password.com/'
 
diff --git a/Casks/1password6.rb b/Casks/1password6.rb
index 8bc5a50a1..bacac5d8e 100644
--- a/Casks/1password6.rb
+++ b/Casks/1password6.rb
@@ -4,8 +4,7 @@ cask '1password6' do
 
   # 1password.com was verified as official when first introduced to the cask
   url "https://c.1password.com/dist/1P/mac4/1Password-#{version}.zip"
-  appcast 'https://app-updates.agilebits.com/product_history/OPM4',
-          checkpoint: 'eb8b60476f30a53f496a84e809b948faf81ea9f9ab442f4c923e48720e5a1f2a'
+  appcast 'https://app-updates.agilebits.com/product_history/OPM4'
   name '1Password'
   homepage 'https://1password.com/'
 
diff --git a/Casks/acorn5.rb b/Casks/acorn5.rb
index 94d1b8f52..05934c97d 100644
--- a/Casks/acorn5.rb
+++ b/Casks/acorn5.rb
@@ -3,8 +3,7 @@ cask 'acorn5' do
   sha256 '2fda93b116ae910643e1383bf425cf30fa8c09e01edffc41730ee19594cff561'
 
   url "https://secure.flyingmeat.com/download/Acorn-#{version}.zip"
-  appcast "https://secure.flyingmeat.com/download/acorn#{version.major}update.xml",
-          checkpoint: '740a11ba7dd12a8d5f34d558f47913f25d50a9fb81c0496a6e7d03a940de15fb'
+  appcast "https://secure.flyingmeat.com/download/acorn#{version.major}update.xml"
   name 'Acorn'
   homepage 'https://flyingmeat.com/acorn/'
 
diff --git a/Casks/airmail-beta.rb b/Casks/airmail-beta.rb
index baaeeeefa..99249d13c 100644
--- a/Casks/airmail-beta.rb
+++ b/Casks/airmail-beta.rb
@@ -4,8 +4,7 @@ cask 'airmail-beta' do
 
   # hockeyapp.net/api/2/apps/84be85c3331ee1d222fd7f0b59e41b04 was verified as official when first introduced to the cask
   url "https://rink.hockeyapp.net/api/2/apps/84be85c3331ee1d222fd7f0b59e41b04/app_versions/#{version.after_comma}?format=zip&"
-  appcast 'https://rink.hockeyapp.net/api/2/apps/84be85c3331ee1d222fd7f0b59e41b04',
-          checkpoint: 'e3affe93a7814ed97516d26e1e92796de77f22900861dd91ab6ee690746ba623'
+  appcast 'https://rink.hockeyapp.net/api/2/apps/84be85c3331ee1d222fd7f0b59e41b04'
   name 'Airmail'
   homepage 'http://airmailapp.com/beta/'
 
diff --git a/Casks/amidst-beta.rb b/Casks/amidst-beta.rb
index 3e29d0618..475d5b24e 100644
--- a/Casks/amidst-beta.rb
+++ b/Casks/amidst-beta.rb
@@ -3,8 +3,7 @@ cask 'amidst-beta' do
   sha256 '0e44d686ba8ca362fced57736b294b9dee507600d9cad3b0cff6771b654d5b26'
 
   url "https://github.com/toolbox4minecraft/amidst/releases/download/v#{version}/amidst-v#{version.dots_to_hyphens}.zip"
-  appcast 'https://github.com/toolbox4minecraft/amidst/releases.atom',
-          checkpoint: '8d6f763ad70b27e5ac668542232679fee057bc60cd546af3ae4a5526e6e7be42'
+  appcast 'https://github.com/toolbox4minecraft/amidst/releases.atom'
   name 'amidst'
   homepage 'https://github.com/toolbox4minecraft/amidst'
 
diff --git a/Casks/atom-beta.rb b/Casks/atom-beta.rb
index b7685aab5..19bcb7c15 100644
--- a/Casks/atom-beta.rb
+++ b/Casks/atom-beta.rb
@@ -4,8 +4,7 @@ cask 'atom-beta' do
 
   # github.com/atom/atom was verified as official when first introduced to the cask
   url "https://github.com/atom/atom/releases/download/v#{version}/atom-mac.zip"
-  appcast 'https://github.com/atom/atom/releases.atom',
-          checkpoint: 'ee255ce28bb9870813561a64b4306faa2c14ad1ac3e8edf75b48035d573e6556'
+  appcast 'https://github.com/atom/atom/releases.atom'
   name 'Github Atom Beta'
   homepage 'https://atom.io/beta'
 
diff --git a/Casks/audirvana-plus2.rb b/Casks/audirvana-plus2.rb
index e0db96aca..98f27ac80 100644
--- a/Casks/audirvana-plus2.rb
+++ b/Casks/audirvana-plus2.rb
@@ -3,8 +3,7 @@ cask 'audirvana-plus2' do
   sha256 '7db18cdd2754c2d366a840dea937e21a86fd73d1fbaf1214aaf517e85a81256a'
 
   url "https://audirvana.com/delivery/AudirvanaPlus_#{version}.dmg"
-  appcast "https://audirvana.com/delivery/audirvanaplus#{version.major}_appcast.xml",
-          checkpoint: 'efa186f1e291808dfb3f3911a108886b8a0e830a25a220bbb3e647890edfcc6d'
+  appcast "https://audirvana.com/delivery/audirvanaplus#{version.major}_appcast.xml"
   name "Audirvana Plus #{version.major}"
   homepage 'https://audirvana.com/'
 
diff --git a/Casks/clementine-rc.rb b/Casks/clementine-rc.rb
index 62b5aae2f..097089bb8 100644
--- a/Casks/clementine-rc.rb
+++ b/Casks/clementine-rc.rb
@@ -4,8 +4,7 @@ cask 'clementine-rc' do
 
   # github.com/clementine-player/Clementine was verified as official when first introduced to the cask
   url "https://github.com/clementine-player/Clementine/releases/download/#{version}/clementine-#{version}.dmg"
-  appcast 'https://github.com/clementine-player/Clementine/releases.atom',
-          checkpoint: '095c6ab8b2c10c84122bba3d39c13fee4124640913fed4a7f0480251b5b84bf4'
+  appcast 'https://github.com/clementine-player/Clementine/releases.atom'
   name 'Clementine'
   homepage 'https://www.clementine-player.org/'
 
diff --git a/Casks/cuda-z-beta.rb b/Casks/cuda-z-beta.rb
index a7bd80b08..ec58da1f4 100644
--- a/Casks/cuda-z-beta.rb
+++ b/Casks/cuda-z-beta.rb
@@ -3,8 +3,7 @@ cask 'cuda-z-beta' do
   sha256 '93e15644136fa7a04d6ad77d47afe3baaf5728f32d0d1814e5e01b7df4021b23'
 
   url "https://downloads.sourceforge.net/cuda-z/cuda-z/Beta/CUDA-Z-#{version}.dmg"
-  appcast 'https://sourceforge.net/projects/cuda-z/rss?path=/cuda-z/Beta',
-          checkpoint: '2d7e1dd741e732c3a1f71d578db2871e4c9f0f7638e12bbf44469ca970d94aba'
+  appcast 'https://sourceforge.net/projects/cuda-z/rss?path=/cuda-z/Beta'
   name 'CUDA-Z'
   homepage 'http://cuda-z.sourceforge.net/'
 
diff --git a/Casks/dash3.rb b/Casks/dash3.rb
index f07030548..e3c6a2b69 100644
--- a/Casks/dash3.rb
+++ b/Casks/dash3.rb
@@ -3,8 +3,7 @@ cask 'dash3' do
   sha256 'a7fd1a759965d26a0de6a43b32aec857e3222fd02d4cfc6d0ef66a92da63d526'
 
   url "https://kapeli.com/downloads/v#{version.major}/Dash.zip"
-  appcast "https://kapeli.com/Dash#{version.major}.xml",
-          checkpoint: '51e03215a540b6316b8f3212843645dcba5eb719be296ba23db956dca2aea48d'
+  appcast "https://kapeli.com/Dash#{version.major}.xml"
   name 'Dash'
   homepage 'https://kapeli.com/dash'
 
diff --git a/Casks/discord-canary.rb b/Casks/discord-canary.rb
index 85565d2ee..8595dfb1f 100644
--- a/Casks/discord-canary.rb
+++ b/Casks/discord-canary.rb
@@ -3,8 +3,7 @@ cask 'discord-canary' do
   sha256 'd6d782d497f28ca099df0d6c31d2b0a293924a59db2303a50c492a9c273d2478'
 
   url "https://cdn-canary.discordapp.com/apps/osx/#{version}/DiscordCanary.dmg"
-  appcast 'https://discordapp.com/api/canary/updates?platform=osx',
-          checkpoint: '86b4f547ff7891b2c00c6030ccad61b04bf7a3f9d739e7c3406ca626b7ac528d'
+  appcast 'https://discordapp.com/api/canary/updates?platform=osx'
   name 'Discord Canary'
   homepage 'https://discordapp.com/'
 
diff --git a/Casks/discord-ptb.rb b/Casks/discord-ptb.rb
index 4b7270cb6..93d480df8 100644
--- a/Casks/discord-ptb.rb
+++ b/Casks/discord-ptb.rb
@@ -3,8 +3,7 @@ cask 'discord-ptb' do
   sha256 '3ce855008aa5d0888cfd2fabf99d0513d5644f7168407b5f4fb395a723acf829'
 
   url "https://cdn-ptb.discordapp.com/apps/osx/#{version}/DiscordPTB.dmg"
-  appcast 'https://discordapp.com/api/ptb/updates?platform=osx',
-          checkpoint: 'a8b5e5bba59d6ddb5a03bd9e336668fbe8aa44fb08ea265bac88d0e6a1fd8f6e'
+  appcast 'https://discordapp.com/api/ptb/updates?platform=osx'
   name 'Discord PTB'
   homepage 'https://discordapp.com/'
 
diff --git a/Casks/docker-edge.rb b/Casks/docker-edge.rb
index ec65d32f9..c744553a3 100644
--- a/Casks/docker-edge.rb
+++ b/Casks/docker-edge.rb
@@ -3,8 +3,7 @@ cask 'docker-edge' do
   sha256 '8c3a19eaaa73cfe9d217fecfc09f2aff7b4c785878ad890ddcf9ae1ba3ef7b06'
 
   url "https://download.docker.com/mac/edge/#{version.after_comma}/Docker.dmg"
-  appcast 'https://download.docker.com/mac/edge/appcast.xml',
-          checkpoint: '83224a4886b203ab2bed28847edd469417e1505933d1d9d315b802dc3c2c726c'
+  appcast 'https://download.docker.com/mac/edge/appcast.xml'
   name 'Docker Community Edition for Mac (Edge)'
   name 'Docker CE for Mac (Edge)'
   homepage 'https://www.docker.com/community-edition'
diff --git a/Casks/dolphin-dev.rb b/Casks/dolphin-dev.rb
index 9e53c26a4..d929ee65b 100644
--- a/Casks/dolphin-dev.rb
+++ b/Casks/dolphin-dev.rb
@@ -3,8 +3,7 @@ cask 'dolphin-dev' do
   sha256 '2feeb57e3ad93e072b9e1ee4395842d7849f00981ae4fc2b0c7893475f45dbf7'
 
   url "https://dl.dolphin-emu.org/builds/dolphin-master-#{version}.dmg"
-  appcast 'https://github.com/dolphin-emu/dolphin/releases.atom',
-          checkpoint: 'd861aa16014fc5ba30ec2c4fc02ca2c57923b12372e89e717c75708fbfa9fd39'
+  appcast 'https://github.com/dolphin-emu/dolphin/releases.atom'
   name 'dolphin-dev'
   homepage 'https://dolphin-emu.org/'
 
diff --git a/Casks/electron-beta.rb b/Casks/electron-beta.rb
index 2a067e78e..8ff69e282 100644
--- a/Casks/electron-beta.rb
+++ b/Casks/electron-beta.rb
@@ -4,8 +4,7 @@ cask 'electron-beta' do
 
   # github.com/electron/electron was verified as official when first introduced to the cask
   url "https://github.com/electron/electron/releases/download/v#{version}/electron-v#{version}-darwin-x64.zip"
-  appcast 'https://github.com/electron/electron/releases.atom',
-          checkpoint: 'f5f01556e1c19fd748eef7851fc7fe2a427b93ef0f91dbabc332345f03d12102'
+  appcast 'https://github.com/electron/electron/releases.atom'
   name 'Electron'
   homepage 'https://electron.atom.io/'
 
diff --git a/Casks/emacs-pretest.rb b/Casks/emacs-pretest.rb
index 771d18d71..f34989122 100644
--- a/Casks/emacs-pretest.rb
+++ b/Casks/emacs-pretest.rb
@@ -3,8 +3,7 @@ cask 'emacs-pretest' do
   sha256 '722187515f514c748d36999ef4d638aac8e4352bf3c7c39d4c7266e913a493d2'
 
   url "https://emacsformacosx.com/emacs-builds/Emacs-pretest-#{version}-universal.dmg"
-  appcast 'https://emacsformacosx.com/atom/pretest',
-          checkpoint: 'f876987516179bd3171d32a4a00cc1641716d9d55c22ef23c326d30b87534f27'
+  appcast 'https://emacsformacosx.com/atom/pretest'
   name 'Emacs'
   homepage 'https://emacsformacosx.com/'
 
diff --git a/Casks/gemini-classic.rb b/Casks/gemini-classic.rb
index 89af60d02..5f5ec7380 100644
--- a/Casks/gemini-classic.rb
+++ b/Casks/gemini-classic.rb
@@ -4,8 +4,7 @@ cask 'gemini-classic' do
 
   # devmate.com/com.macpaw.site.Gemini was verified as official when first introduced to the cask
   url "https://dl.devmate.com/com.macpaw.site.Gemini/#{version.before_comma}/#{version.after_comma}/MacPawGemini-#{version.before_comma}.zip"
-  appcast 'https://updates.devmate.com/com.macpaw.site.Gemini.xml',
-          checkpoint: 'e7459033f8af7371c6114b2c91dcfb5a07619385114c09e2b2652ac4734719ae'
+  appcast 'https://updates.devmate.com/com.macpaw.site.Gemini.xml'
   name 'MacPaw Gemini'
   homepage 'https://macpaw.com/gemini-classic'
 
diff --git a/Casks/github-beta.rb b/Casks/github-beta.rb
index 09e1b7e0f..2a1edd7a1 100644
--- a/Casks/github-beta.rb
+++ b/Casks/github-beta.rb
@@ -4,8 +4,7 @@ cask 'github-beta' do
 
   # githubusercontent.com was verified as official when first introduced to the cask
   url "https://desktop.githubusercontent.com/releases/#{version}/GitHubDesktop.zip"
-  appcast 'https://github.com/desktop/desktop/releases.atom',
-          checkpoint: '142bfa5176a2cdd32ba40f9ff49eea29ec7d855332f07972b22744966e171915'
+  appcast 'https://github.com/desktop/desktop/releases.atom'
   name 'GitHub Desktop'
   homepage 'https://desktop.github.com/'
 
diff --git a/Casks/hex-fiend-beta.rb b/Casks/hex-fiend-beta.rb
index 07dc799c5..78bff7f24 100644
--- a/Casks/hex-fiend-beta.rb
+++ b/Casks/hex-fiend-beta.rb
@@ -4,8 +4,7 @@ cask 'hex-fiend-beta' do
 
   # github.com/ridiculousfish/HexFiend was verified as official when first introduced to the cask
   url "https://github.com/ridiculousfish/HexFiend/releases/download/v#{version.before_comma}-beta-#{version.after_comma}/Hex_Fiend_#{version.major_minor}.dmg"
-  appcast 'https://github.com/ridiculousfish/HexFiend/releases.atom',
-          checkpoint: '3646b93dde0a520765c3e8290da11c1e16e78bdd93bc3287fb84f9e27b4bce0d'
+  appcast 'https://github.com/ridiculousfish/HexFiend/releases.atom'
   name 'Hex Fiend'
   homepage 'http://ridiculousfish.com/hexfiend/'
 
diff --git a/Casks/hyper-canary.rb b/Casks/hyper-canary.rb
index 07e0a047d..8f6540174 100644
--- a/Casks/hyper-canary.rb
+++ b/Casks/hyper-canary.rb
@@ -4,8 +4,7 @@ cask 'hyper-canary' do
 
   # github.com/zeit/hyper was verified as official when first introduced to the cask
   url "https://github.com/zeit/hyper/releases/download/#{version}/hyper-#{version}-mac.zip"
-  appcast 'https://github.com/zeit/hyper/releases.atom',
-          checkpoint: '4d7b84866529517bcce8434583316c056751d80712f2670e1de01abf6e9f67c7'
+  appcast 'https://github.com/zeit/hyper/releases.atom'
   name 'Hyper'
   homepage 'https://hyper.is/'
 
diff --git a/Casks/iina-beta.rb b/Casks/iina-beta.rb
index dcb6ae287..cfcb1a8d2 100644
--- a/Casks/iina-beta.rb
+++ b/Casks/iina-beta.rb
@@ -4,8 +4,7 @@ cask 'iina-beta' do
 
   # dl-portal.iina.io was verified as official when first introduced to the cask
   url "https://dl-portal.iina.io/IINA.v#{version}.dmg"
-  appcast 'https://www.iina.io/appcast-beta.xml',
-          checkpoint: 'be484a5696b8806dc8ebdc09909204fe5b4d1e078a00aa3db3e5b4f9fcf0d155'
+  appcast 'https://www.iina.io/appcast-beta.xml'
   name 'IINA'
   homepage 'https://lhc70000.github.io/iina/'
 
diff --git a/Casks/iterm2-beta.rb b/Casks/iterm2-beta.rb
index bf402f5d3..1bee7a0fe 100644
--- a/Casks/iterm2-beta.rb
+++ b/Casks/iterm2-beta.rb
@@ -4,8 +4,7 @@ cask 'iterm2-beta' do
   sha256 '6ddc635caf7ada8c4b93c2c01bce81cfcdf932c4ec71ba2669faeb2ca6cf68c6'
 
   url "https://iterm2.com/downloads/beta/iTerm2-#{version.dots_to_underscores}.zip"
-  appcast 'https://iterm2.com/appcasts/testing3.xml',
-          checkpoint: '5492d6993634fbdccb90306e5625c63d37f483dc709c42c7a26e0c46cdb90df2'
+  appcast 'https://iterm2.com/appcasts/testing3.xml'
   name 'iTerm2'
   homepage 'https://www.iterm2.com/'
 
diff --git a/Casks/jabref-beta.rb b/Casks/jabref-beta.rb
index 88a928ec0..927cf871a 100644
--- a/Casks/jabref-beta.rb
+++ b/Casks/jabref-beta.rb
@@ -4,8 +4,7 @@ cask 'jabref-beta' do
 
   # github.com/JabRef/jabref was verified as official when first introduced to the cask
   url "https://github.com/JabRef/jabref/releases/download/v#{version}/JabRef_macos_#{version.dots_to_underscores}.dmg"
-  appcast 'https://github.com/JabRef/jabref/releases.atom',
-          checkpoint: 'e03551ded048dcdbfd73ae376dfcfd9b9bfade9fc0e21b47f8d41ed0f633bc68'
+  appcast 'https://github.com/JabRef/jabref/releases.atom'
   name 'JabRef Beta'
   homepage 'https://www.jabref.org/'
 
diff --git a/Casks/kap-beta.rb b/Casks/kap-beta.rb
index 50be336e6..164cdaab1 100644
--- a/Casks/kap-beta.rb
+++ b/Casks/kap-beta.rb
@@ -4,8 +4,7 @@ cask 'kap-beta' do
 
   # github.com/wulkano/kap was verified as official when first introduced to the cask
   url "https://github.com/wulkano/kap/releases/download/v#{version}/kap-beta-#{version}.dmg"
-  appcast 'https://github.com/wulkano/kap/releases.atom',
-          checkpoint: 'b31c46531aefb3265418305411b0f3d275208201524b47aab75cc47b8e24de0b'
+  appcast 'https://github.com/wulkano/kap/releases.atom'
   name 'Kap Beta'
   homepage 'https://getkap.co/'
 
diff --git a/Casks/keka-beta.rb b/Casks/keka-beta.rb
index 1821d84d7..bf9c05698 100644
--- a/Casks/keka-beta.rb
+++ b/Casks/keka-beta.rb
@@ -4,8 +4,7 @@ cask 'keka-beta' do
 
   # github.com/aonez/Keka was verified as official when first introduced to the cask
   url "https://github.com/aonez/Keka/releases/download/v#{version.before_comma}-rc.#{version.after_comma}/Keka-#{version.before_comma}-rc.#{version.after_comma}.dmg"
-  appcast 'https://github.com/aonez/Keka/releases.atom',
-          checkpoint: '629b15ccf2c039bbbc0640ecf2d4134ea36f8852f54c84f07ee48836dc52d4b6'
+  appcast 'https://github.com/aonez/Keka/releases.atom'
   name 'Keka'
   homepage 'http://www.kekaosx.com/'
 
diff --git a/Casks/libreoffice-rc.rb b/Casks/libreoffice-rc.rb
index abe4a0672..94d527065 100644
--- a/Casks/libreoffice-rc.rb
+++ b/Casks/libreoffice-rc.rb
@@ -4,8 +4,7 @@ cask 'libreoffice-rc' do
 
   # documentfoundation.org/libreoffice was verified as official when first introduced to the cask
   url "https://download.documentfoundation.org/libreoffice/testing/#{version.major_minor_patch}/mac/x86_64/LibreOffice_#{version}_MacOS_x86-64.dmg"
-  appcast 'https://download.documentfoundation.org/libreoffice/testing/',
-          checkpoint: 'd128cc31aeb266b069062a5344c684c7dc03d7a31d209145a6bd7829884b50d0'
+  appcast 'https://download.documentfoundation.org/libreoffice/testing/'
   name 'LibreOffice Release Candidate'
   homepage 'https://www.libreoffice.org/download/pre-releases/'
   gpg "#{url}.asc", key_id: 'c2839ecad9408fbe9531c3e9f434a1efafeeaea3'
diff --git a/Casks/libreoffice-still.rb b/Casks/libreoffice-still.rb
index b96f4c985..57caa31dc 100644
--- a/Casks/libreoffice-still.rb
+++ b/Casks/libreoffice-still.rb
@@ -4,8 +4,7 @@ cask 'libreoffice-still' do
 
   # documentfoundation.org was verified as official when first introduced to the cask
   url "http://download.documentfoundation.org/libreoffice/stable/#{version}/mac/x86_64/LibreOffice_#{version}_MacOS_x86-64.dmg"
-  appcast 'https://download.documentfoundation.org/libreoffice/stable/',
-          checkpoint: '2aa7f8e78791bf00be6ce82df62168407f8d252af1ac51a6f4052f464d9dfb27'
+  appcast 'https://download.documentfoundation.org/libreoffice/stable/'
   name 'LibreOffice Still'
   homepage 'https://www.libreoffice.org/download/libreoffice-still/'
   gpg "#{url}.asc", key_id: 'c2839ecad9408fbe9531c3e9f434a1efafeeaea3'
diff --git a/Casks/libreofficedev.rb b/Casks/libreofficedev.rb
index 5b3e19940..8d71df975 100644
--- a/Casks/libreofficedev.rb
+++ b/Casks/libreofficedev.rb
@@ -4,8 +4,7 @@ cask 'libreofficedev' do
 
   # documentfoundation.org/libreoffice was verified as official when first introduced to the cask
   url "https://download.documentfoundation.org/libreoffice/testing/#{version.major_minor_patch}/mac/x86_64/LibreOfficeDev_#{version}_MacOS_x86-64.dmg"
-  appcast 'https://download.documentfoundation.org/libreoffice/testing/',
-          checkpoint: '6fbc46279b53d8ea7338a1ecafe9ce43b6536408ee86d1c8f783b7505dee2422'
+  appcast 'https://download.documentfoundation.org/libreoffice/testing/'
   name 'LibreOffice Development Version'
   homepage 'https://www.libreoffice.org/download/pre-releases/'
   gpg "#{url}.asc", key_id: 'c2839ecad9408fbe9531c3e9f434a1efafeeaea3'
diff --git a/Casks/lingon-x2.rb b/Casks/lingon-x2.rb
index df4b2aa61..86c141262 100644
--- a/Casks/lingon-x2.rb
+++ b/Casks/lingon-x2.rb
@@ -3,8 +3,7 @@ cask 'lingon-x2' do
   sha256 '84b0b71e5c39bbb548c196dd2c0d693f0b8c143336a603b591934080c12f630d'
 
   url "https://www.peterborgapps.com/downloads/LingonX#{version.major}.zip"
-  appcast "https://www.peterborgapps.com/updates/lingonx#{version.major}-appcast.xml",
-          checkpoint: '09f34256b3da76e74000b606661ee6fc929675de81ccc43b6091b9dcfe2a2386'
+  appcast "https://www.peterborgapps.com/updates/lingonx#{version.major}-appcast.xml"
   name 'Lingon X'
   homepage 'https://www.peterborgapps.com/lingon/'
 
diff --git a/Casks/lingon-x4.rb b/Casks/lingon-x4.rb
index ecd890820..245e4131e 100644
--- a/Casks/lingon-x4.rb
+++ b/Casks/lingon-x4.rb
@@ -3,8 +3,7 @@ cask 'lingon-x4' do
   sha256 '85d5b7e28f3b404b285d11e35311dbb7d9cc23df20ebb089c08a7483e37e62ef'
 
   url "https://www.peterborgapps.com/downloads/LingonX#{version.major}.zip"
-  appcast "https://www.peterborgapps.com/updates/lingonx#{version.major}-appcast.xml",
-          checkpoint: 'b6ff76e527e04107585a2a5ed41608c65eedc829f4d2f69680896db959184da8'
+  appcast "https://www.peterborgapps.com/updates/lingonx#{version.major}-appcast.xml"
   name 'Lingon X'
   homepage 'https://www.peterborgapps.com/lingon/'
 
diff --git a/Casks/lingon-x5.rb b/Casks/lingon-x5.rb
index c06ebb25a..496009ae3 100644
--- a/Casks/lingon-x5.rb
+++ b/Casks/lingon-x5.rb
@@ -3,8 +3,7 @@ cask 'lingon-x5' do
   sha256 '7169aaa861626f62112c6ac24256226cd5a5f3b73dade41a4a803232d5942063'
 
   url "https://www.peterborgapps.com/downloads/LingonX#{version.major}.zip"
-  appcast "https://www.peterborgapps.com/updates/lingonx#{version.major}-appcast.xml",
-          checkpoint: '4ba09befbe7a447d13ddbd86acb12a4e85db0382b5dc158863d8041679bc8faa'
+  appcast "https://www.peterborgapps.com/updates/lingonx#{version.major}-appcast.xml"
   name 'Lingon X'
   homepage 'https://www.peterborgapps.com/lingon/'
 
diff --git a/Casks/mi-beta.rb b/Casks/mi-beta.rb
index 4b956056b..1691236fb 100644
--- a/Casks/mi-beta.rb
+++ b/Casks/mi-beta.rb
@@ -3,8 +3,7 @@ cask 'mi-beta' do
   sha256 '378221f52d673fcb478e98517819b29c87c902403cd5b764a7f7685b7b2f2ff4'
 
   url "https://www.mimikaki.net/download/mi#{version}.dmg"
-  appcast 'https://www.mimikaki.net/download/appcast_beta.xml',
-          checkpoint: '4e6eff60c8d7b84ac87d3483b0cb29b2f1b9899cfe7ed8631853e67fd7177c75'
+  appcast 'https://www.mimikaki.net/download/appcast_beta.xml'
   name 'mi'
   homepage 'https://www.mimikaki.net/download/beta.html'
 
diff --git a/Casks/microsoft-remote-desktop-beta.rb b/Casks/microsoft-remote-desktop-beta.rb
index d3d322c22..2d77bd685 100644
--- a/Casks/microsoft-remote-desktop-beta.rb
+++ b/Casks/microsoft-remote-desktop-beta.rb
@@ -3,8 +3,7 @@ cask 'microsoft-remote-desktop-beta' do
   sha256 'e3b352b2ff335df6777f7c10bc30c8fe85bbacac8508367191a9ba98fd66d926'
 
   url "https://rink.hockeyapp.net/api/2/apps/5e0c144289a51fca2d3bfa39ce7f2b06/app_versions/#{version.after_comma}?format=zip"
-  appcast 'https://rink.hockeyapp.net/api/2/apps/5e0c144289a51fca2d3bfa39ce7f2b06',
-          checkpoint: 'fa0b08088994ed0dc98a7824bb5668b1a5bf132b80b83a1ebee21dcb3e8a9964'
+  appcast 'https://rink.hockeyapp.net/api/2/apps/5e0c144289a51fca2d3bfa39ce7f2b06'
   name 'Microsoft Remote Desktop Beta'
   homepage 'https://rink.hockeyapp.net/apps/5e0c144289a51fca2d3bfa39ce7f2b06/'
 
diff --git a/Casks/omegat-dev.rb b/Casks/omegat-dev.rb
index 61ae71fa1..2a0fa8814 100644
--- a/Casks/omegat-dev.rb
+++ b/Casks/omegat-dev.rb
@@ -4,8 +4,7 @@ cask 'omegat-dev' do
 
   # downloads.sourceforge.net/omegat was verified as official when first introduced to the cask
   url "https://downloads.sourceforge.net/omegat/OmegaT%20-%20Latest/OmegaT%20#{version}/OmegaT_#{version}_Beta_Mac_Signed.zip"
-  appcast 'https://sourceforge.net/projects/omegat/rss?path=/OmegaT%20-%20Latest',
-          checkpoint: '74928e8884a81e73988f43f6ac2cf03cff869563cba0cb0015b40d184f8433eb'
+  appcast 'https://sourceforge.net/projects/omegat/rss?path=/OmegaT%20-%20Latest'
   name 'OmegaT Development'
   homepage 'https://omegat.org/'
 
diff --git a/Casks/openbazaar-beta.rb b/Casks/openbazaar-beta.rb
index b602062cb..1a9a81f7f 100644
--- a/Casks/openbazaar-beta.rb
+++ b/Casks/openbazaar-beta.rb
@@ -4,8 +4,7 @@ cask 'openbazaar-beta' do
 
   # github.com/OpenBazaar/openbazaar-desktop was verified as official when first introduced to the cask
   url "https://github.com/OpenBazaar/openbazaar-desktop/releases/download/v#{version}/OpenBazaar#{version.major}-#{version.major_minor_patch}.dmg"
-  appcast 'https://github.com/OpenBazaar/openbazaar-desktop/releases.atom',
-          checkpoint: '2ee5b2c7ffabcd3b6357e7192d80dad9143454be97c0747e7ed5f53f9a789070'
+  appcast 'https://github.com/OpenBazaar/openbazaar-desktop/releases.atom'
   name 'OpenBazaar Beta'
   homepage 'https://www.openbazaar.org/'
 
diff --git a/Casks/openemu-experimental.rb b/Casks/openemu-experimental.rb
index f813c0fc1..cbb038761 100644
--- a/Casks/openemu-experimental.rb
+++ b/Casks/openemu-experimental.rb
@@ -4,8 +4,7 @@ cask 'openemu-experimental' do
 
   # github.com/OpenEmu/OpenEmu was verified as official when first introduced to the cask
   url "https://github.com/OpenEmu/OpenEmu/releases/download/v#{version}/OpenEmu_#{version}-experimental.zip"
-  appcast 'https://github.com/OpenEmu/OpenEmu/releases.atom',
-          checkpoint: '2152308ed5b65919aa355bcd1aacb857a4d8ec921ab7a63d8042f6cc70d0076b'
+  appcast 'https://github.com/OpenEmu/OpenEmu/releases.atom'
   name 'OpenEmu'
   homepage 'http://openemu.org/'
 
diff --git a/Casks/openscad-snapshot.rb b/Casks/openscad-snapshot.rb
index c9669d941..df77d275d 100644
--- a/Casks/openscad-snapshot.rb
+++ b/Casks/openscad-snapshot.rb
@@ -3,8 +3,7 @@ cask 'openscad-snapshot' do
   sha256 '58330d5118ec921b3ed930adfb35e90fdaa30afc25930f85cc102fdf255112aa'
 
   url "http://files.openscad.org/snapshots/OpenSCAD-#{version}.dmg"
-  appcast 'http://www.openscad.org/inc/mac_snapshot_links.js',
-          checkpoint: '3649c93e68cf90854651ef413939474ea8530010916dbd6d0cb2e234b56954a6'
+  appcast 'http://www.openscad.org/inc/mac_snapshot_links.js'
   name 'OpenSCAD'
   homepage 'http://www.openscad.org/downloads.html#snapshots'
 
diff --git a/Casks/opensong-beta.rb b/Casks/opensong-beta.rb
index ff1b75a38..92161993d 100644
--- a/Casks/opensong-beta.rb
+++ b/Casks/opensong-beta.rb
@@ -4,8 +4,7 @@ cask 'opensong-beta' do
 
   # sourceforge.net/opensong was verified as official when first introduced to the cask
   url "https://downloads.sourceforge.net/opensong/OpenSongOSX-V#{version}.dmg"
-  appcast 'https://sourceforge.net/projects/opensong/rss',
-          checkpoint: 'cd98383cd4ebc45b9c662dbd65ace93b51041221b3f0873063b492067880516c'
+  appcast 'https://sourceforge.net/projects/opensong/rss'
   name 'OpenSong'
   homepage 'http://www.opensong.org/'
 
diff --git a/Casks/prince-latest.rb b/Casks/prince-latest.rb
index f21ab2363..2921214fc 100644
--- a/Casks/prince-latest.rb
+++ b/Casks/prince-latest.rb
@@ -3,8 +3,7 @@ cask 'prince-latest' do
   sha256 '533789e4548c6f42303cfc375bfe6ede03399920040bef1d40c775c8d8797f88'
 
   url "https://www.princexml.com/download/prince-#{version}-macosx.tar.gz"
-  appcast 'https://www.princexml.com/latest/',
-          checkpoint: 'd5f1f8130e762c2e556a3725554c433f7ee9f58613846ae431e4e2748cc368e6'
+  appcast 'https://www.princexml.com/latest/'
   name 'Prince'
   homepage 'https://www.princexml.com/'
 
diff --git a/Casks/psi-plus.rb b/Casks/psi-plus.rb
index 7762b69ae..2d8d5d285 100644
--- a/Casks/psi-plus.rb
+++ b/Casks/psi-plus.rb
@@ -4,8 +4,7 @@ cask 'psi-plus' do
 
   # downloads.sourceforge.net/psiplus/Mac-OS-X was verified as official when first introduced to the cask
   url "https://downloads.sourceforge.net/psiplus/Mac-OS-X/psi-plus-#{version.before_comma}-qt5-webengine-git-#{version.after_comma}-macosx.dmg"
-  appcast 'https://sourceforge.net/projects/psiplus/rss',
-          checkpoint: '522964829316b8a257efe824ac61b611a0cf356e81e40602b751d0422b0aff6b'
+  appcast 'https://sourceforge.net/projects/psiplus/rss'
   name 'Psi+'
   homepage 'http://psi-plus.com/'
 
diff --git a/Casks/rhinoceroswip.rb b/Casks/rhinoceroswip.rb
index 948aa81e3..a3ac5d941 100644
--- a/Casks/rhinoceroswip.rb
+++ b/Casks/rhinoceroswip.rb
@@ -4,8 +4,7 @@ cask 'rhinoceroswip' do
 
   # mcneel.com was verified as official when first introduced to the cask
   url "https://files.mcneel.com/Releases/Rhino/5.0/Mac/RhinoWIP_#{version}.dmg"
-  appcast 'https://files.mcneel.com/rhino/5.0/mac/5CwipUpdates.xml',
-          checkpoint: 'ee6458f135585c7502e88415b506eaa2e91de3fc73fc263cab38eab1d4e7dc97'
+  appcast 'https://files.mcneel.com/rhino/5.0/mac/5CwipUpdates.xml'
   name 'Rhinoceros WIP'
   homepage 'https://www.rhino3d.com/download/rhino-for-mac/5/wip'
 
diff --git a/Casks/royal-tsx-beta.rb b/Casks/royal-tsx-beta.rb
index 60fd424fc..dd801c39b 100644
--- a/Casks/royal-tsx-beta.rb
+++ b/Casks/royal-tsx-beta.rb
@@ -3,8 +3,7 @@ cask 'royal-tsx-beta' do
   sha256 '825e17a500940848b35cf48696bb7cb50ba56be4d408f46403bc5d0a9988d5e1'
 
   url "https://royaltsx-v3.royalapplications.com/updates/royaltsx_#{version}.dmg"
-  appcast 'https://royaltsx-v3.royalapplications.com/updates_beta.php',
-          checkpoint: 'c5fd142158785944372a92f03fc05e84c5245872fb8beeb2f94de228b3bc31c0'
+  appcast 'https://royaltsx-v3.royalapplications.com/updates_beta.php'
   name 'Royal TSX'
   homepage 'https://www.royalapplications.com/ts/mac/features'
 
diff --git a/Casks/scribus-dev.rb b/Casks/scribus-dev.rb
index 0fb14a44f..6744918e8 100644
--- a/Casks/scribus-dev.rb
+++ b/Casks/scribus-dev.rb
@@ -4,8 +4,7 @@ cask 'scribus-dev' do
 
   # sourceforge.net/scribus was verified as official when first introduced to the cask
   url "https://downloads.sourceforge.net/scribus/scribus-devel/#{version}/scribus-#{version}.dmg"
-  appcast 'https://sourceforge.net/projects/scribus/rss?path=/scribus-devel',
-          checkpoint: 'f6f2167e26e07332197f8c876c08794f578705414ef4f4128b12f914584e22e9'
+  appcast 'https://sourceforge.net/projects/scribus/rss?path=/scribus-devel'
   name 'Scribus'
   homepage 'https://www.scribus.net/'
 
diff --git a/Casks/signal-beta.rb b/Casks/signal-beta.rb
index db072a613..699c8f5df 100644
--- a/Casks/signal-beta.rb
+++ b/Casks/signal-beta.rb
@@ -3,8 +3,7 @@ cask 'signal-beta' do
   sha256 '7827ef8045c4980bca70b62af57a697a95aff7a96da6aab7cb2fef5a7078a682'
 
   url "https://updates.signal.org/desktop/signal-desktop-beta-mac-#{version}.zip"
-  appcast 'https://github.com/signalapp/Signal-Desktop/releases.atom',
-          checkpoint: 'f94ef7c6125947a995b418109c23b4fcf23ccbc55d79184b645ad32b2bca3923'
+  appcast 'https://github.com/signalapp/Signal-Desktop/releases.atom'
   name 'Signal Beta'
   homepage 'https://signal.org/'
 
diff --git a/Casks/sketch-beta.rb b/Casks/sketch-beta.rb
index 586540a84..c0a885756 100644
--- a/Casks/sketch-beta.rb
+++ b/Casks/sketch-beta.rb
@@ -4,8 +4,7 @@ cask 'sketch-beta' do
 
   # hockeyapp.net/api/2/apps/0172d48cceec171249a8d850fb16276b was verified as official when first introduced to the cask
   url "https://rink.hockeyapp.net/api/2/apps/0172d48cceec171249a8d850fb16276b/app_versions/#{version.after_comma}?format=zip"
-  appcast 'https://rink.hockeyapp.net/api/2/apps/0172d48cceec171249a8d850fb16276b',
-          checkpoint: '33dfc3e54754f44b75c95ed7012f5396aaf19e6192c7205aafc5ab1edfcc9e4e'
+  appcast 'https://rink.hockeyapp.net/api/2/apps/0172d48cceec171249a8d850fb16276b'
   name 'Sketch'
   homepage 'https://www.sketchapp.com/beta/'
 
diff --git a/Casks/smartgit-rc.rb b/Casks/smartgit-rc.rb
index 29c8b791f..78f8ac839 100644
--- a/Casks/smartgit-rc.rb
+++ b/Casks/smartgit-rc.rb
@@ -3,8 +3,7 @@ cask 'smartgit-rc' do
   sha256 'f992df0b378760ed516a7dbb481a1f6a9a014fe6933b0a232dbcef7df5ac9149'
 
   url "https://www.syntevo.com/downloads/smartgit/smartgit-macosx-#{version.dots_to_underscores}.dmg"
-  appcast 'https://www.syntevo.com/smartgit/changelog-eap.txt',
-          checkpoint: 'f362b7a8f7f10ddcb210314c10d43698ed88ae98b422f05d073320d6c584e6af'
+  appcast 'https://www.syntevo.com/smartgit/changelog-eap.txt'
   name 'SmartGit'
   homepage 'https://www.syntevo.com/smartgit/'
 
diff --git a/Casks/sourcetree-alpha.rb b/Casks/sourcetree-alpha.rb
index 1772afe68..e9b69c090 100644
--- a/Casks/sourcetree-alpha.rb
+++ b/Casks/sourcetree-alpha.rb
@@ -4,8 +4,7 @@ cask 'sourcetree-alpha' do
 
   # atlassian.com was verified as official when first introduced to the cask
   url "https://downloads.atlassian.com/software/sourcetree/Sourcetree_#{version}.zip"
-  appcast 'https://www.sourcetreeapp.com/update/SparkleAppcastAlpha.xml',
-          checkpoint: '4d102b3046fd5b1714ec2625868fd5be6669652f726af05eee704bd12357a773'
+  appcast 'https://www.sourcetreeapp.com/update/SparkleAppcastAlpha.xml'
   name 'Atlassian SourceTree'
   homepage 'https://www.sourcetreeapp.com/'
 
diff --git a/Casks/sourcetree-beta.rb b/Casks/sourcetree-beta.rb
index 70a6722f0..f72c8de85 100644
--- a/Casks/sourcetree-beta.rb
+++ b/Casks/sourcetree-beta.rb
@@ -4,8 +4,7 @@ cask 'sourcetree-beta' do
 
   # atlassian.com was verified as official when first introduced to the cask
   url "https://downloads.atlassian.com/software/sourcetree/Sourcetree_#{version}.zip"
-  appcast 'https://www.sourcetreeapp.com/update/SparkleAppcastBeta.xml',
-          checkpoint: '58e5ab6e0280f19279e1932110056ac4334212ad50fdf2ab9e7549d91e992191'
+  appcast 'https://www.sourcetreeapp.com/update/SparkleAppcastBeta.xml'
   name 'Atlassian SourceTree'
   homepage 'https://www.sourcetreeapp.com/'
 
diff --git a/Casks/spyder-py2.rb b/Casks/spyder-py2.rb
index 0c106961a..249568634 100644
--- a/Casks/spyder-py2.rb
+++ b/Casks/spyder-py2.rb
@@ -4,8 +4,7 @@ cask 'spyder-py2' do
 
   # bitbucket.org/spyder-ide/ was verified as official when first introduced to the cask
   url "https://bitbucket.org/spyder-ide/spyderlib/downloads/spyder-#{version}-py2.7.dmg"
-  appcast 'https://github.com/spyder-ide/spyder/releases.atom',
-          checkpoint: '161dca2fb8e4ad15eb9b0d6645b56de30d98846afed368c1112278dd777da47e'
+  appcast 'https://github.com/spyder-ide/spyder/releases.atom'
   name 'Spyder-Py2'
   homepage 'https://github.com/spyder-ide/spyder'
 
diff --git a/Casks/sublime-text-dev.rb b/Casks/sublime-text-dev.rb
index 4c5c79296..009cfd1d1 100644
--- a/Casks/sublime-text-dev.rb
+++ b/Casks/sublime-text-dev.rb
@@ -3,8 +3,7 @@ cask 'sublime-text-dev' do
   sha256 '93d7c9162edf315b46e02049e45add15f8ca309820f649ba6ddd4ae0597cd6b3'
 
   url "https://download.sublimetext.com/Sublime%20Text%20Build%20#{version.no_dots}.dmg"
-  appcast "https://www.sublimetext.com/updates/#{version.major}/dev/appcast_osx.xml",
-          checkpoint: 'cd95fa60e07e5f31f91b06d276f6f4d8147d8acc4b2a9dbb27ad45037570eccb'
+  appcast "https://www.sublimetext.com/updates/#{version.major}/dev/appcast_osx.xml"
   name 'Sublime Text'
   homepage "https://www.sublimetext.com/#{version.major}dev"
 
diff --git a/Casks/sublime-text2.rb b/Casks/sublime-text2.rb
index 87a5d40e6..1be18f039 100644
--- a/Casks/sublime-text2.rb
+++ b/Casks/sublime-text2.rb
@@ -3,8 +3,7 @@ cask 'sublime-text2' do
   sha256 '906e71e19ae5321f80e7cf42eab8355146d8f2c3fd55be1f7fe5c62c57165add'
 
   url "https://download.sublimetext.com/Sublime%20Text%20#{version}.dmg"
-  appcast 'https://www.sublimetext.com/updates/2/stable/appcast_osx.xml',
-          checkpoint: '1f88d22b2ed5ba5a9213accf500ca8f1a9723b391fbbbc45ffb23cd98c98519c'
+  appcast 'https://www.sublimetext.com/updates/2/stable/appcast_osx.xml'
   name 'Sublime Text 2'
   homepage 'https://www.sublimetext.com/2'
 
diff --git a/Casks/telegram-alpha.rb b/Casks/telegram-alpha.rb
index f4e6c3f3a..da248a2ab 100644
--- a/Casks/telegram-alpha.rb
+++ b/Casks/telegram-alpha.rb
@@ -4,8 +4,7 @@ cask 'telegram-alpha' do
 
   # hockeyapp.net/api/2/apps/6ed2ac3049e1407387c2f1ffcb74e81f was verified as official when first introduced to the cask
   url "https://rink.hockeyapp.net/api/2/apps/6ed2ac3049e1407387c2f1ffcb74e81f/app_versions/#{version.after_comma}?format=zip"
-  appcast 'https://rink.hockeyapp.net/api/2/apps/6ed2ac3049e1407387c2f1ffcb74e81f',
-          checkpoint: '7dbbf18c49a8258f03d6651fda2c8589801ce49a2e5243663e9e38c039bd9392'
+  appcast 'https://rink.hockeyapp.net/api/2/apps/6ed2ac3049e1407387c2f1ffcb74e81f'
   name 'Telegram for macOS'
   name 'Telegram Swift'
   homepage 'https://macos.telegram.org/'
diff --git a/Casks/toggl-beta.rb b/Casks/toggl-beta.rb
index eb31400db..194af359e 100644
--- a/Casks/toggl-beta.rb
+++ b/Casks/toggl-beta.rb
@@ -4,8 +4,7 @@ cask 'toggl-beta' do
 
   # github.com/toggl/toggldesktop was verified as official when first introduced to the cask
   url "https://github.com/toggl/toggldesktop/releases/download/v#{version}/TogglDesktop-#{version.dots_to_underscores}.dmg"
-  appcast 'https://assets.toggl.com/installers/darwin_beta_appcast.xml',
-          checkpoint: '5c1d8cfcf14658ea3dec3c9354e8bf446057eb0ed945ed5e3ef241f91ae9288b'
+  appcast 'https://assets.toggl.com/installers/darwin_beta_appcast.xml'
   name 'TogglDesktop'
   homepage 'https://www.toggl.com/'
 
diff --git a/Casks/toggl-dev.rb b/Casks/toggl-dev.rb
index 22a821e79..2781db7d1 100644
--- a/Casks/toggl-dev.rb
+++ b/Casks/toggl-dev.rb
@@ -4,8 +4,7 @@ cask 'toggl-dev' do
 
   # github.com/toggl/toggldesktop was verified as official when first introduced to the cask
   url "https://github.com/toggl/toggldesktop/releases/download/v#{version}/TogglDesktop-#{version.dots_to_underscores}.dmg"
-  appcast 'https://assets.toggl.com/installers/darwin_dev_appcast.xml',
-          checkpoint: 'af131add8c864e2e81d18b21e98c7bfeca1937a7e945d60a7834537c9a5d1484'
+  appcast 'https://assets.toggl.com/installers/darwin_dev_appcast.xml'
   name 'TogglDesktop'
   homepage 'https://www.toggl.com/'
 
diff --git a/Casks/torbrowser-alpha.rb b/Casks/torbrowser-alpha.rb
index 0dd5190fc..2cbf76f8e 100644
--- a/Casks/torbrowser-alpha.rb
+++ b/Casks/torbrowser-alpha.rb
@@ -3,8 +3,7 @@ cask 'torbrowser-alpha' do
   sha256 'a1707a4cc48791ad1907237d153a3cf25a7f79e85747eb689d4658f16392ba16'
 
   url "https://dist.torproject.org/torbrowser/#{version}/TorBrowser-#{version}-osx64_en-US.dmg"
-  appcast 'https://dist.torproject.org/torbrowser/',
-          checkpoint: '1f6a6048c267091441e35f62bebabe98a4362af32f6a2f7d692aa514b82ea8d1'
+  appcast 'https://dist.torproject.org/torbrowser/'
   name 'Tor Browser'
   homepage 'https://www.torproject.org/projects/torbrowser.html'
   gpg "#{url}.asc", key_id: 'ef6e286dda85ea2a4ba7de684e2c6e8793298290'
diff --git a/Casks/tower-beta.rb b/Casks/tower-beta.rb
index 2e969239a..1d9d4aa41 100644
--- a/Casks/tower-beta.rb
+++ b/Casks/tower-beta.rb
@@ -4,8 +4,7 @@ cask 'tower-beta' do
 
   # amazonaws.com/apps/tower3-mac was verified as official when first introduced to the cask
   url "https://fournova-app-updates.s3.amazonaws.com/apps/tower3-mac/#{version.after_comma}/Tower-#{version.before_comma}.zip"
-  appcast "https://updates.fournova.com/updates/tower#{version.major}-mac/beta",
-          checkpoint: '36662dbb901836cb7b5c82ce4888b5425be8da5fc44a157cd3fde19ee8abc27d'
+  appcast "https://updates.fournova.com/updates/tower#{version.major}-mac/beta"
   name 'Tower'
   homepage 'https://www.git-tower.com/public-beta-2018'
 
diff --git a/Casks/transmit4.rb b/Casks/transmit4.rb
index f28558f7b..a5e2c9878 100644
--- a/Casks/transmit4.rb
+++ b/Casks/transmit4.rb
@@ -3,8 +3,7 @@ cask 'transmit4' do
   sha256 '0d7095351378aa3c581de064f99fedecbfac683377048a4c0457976f5ce79f3b'
 
   url "https://www.panic.com/transmit/d/Transmit%20#{version}.zip"
-  appcast "https://library.panic.com/releasenotes/transmit#{version.major}/",
-          checkpoint: '7df7a4642492b6512de70db5ec9f7acd72707e4a098e9db00ed4f604fb8b90df'
+  appcast "https://library.panic.com/releasenotes/transmit#{version.major}/"
   name 'Transmit'
   homepage 'https://panic.com/transmit/'
 
diff --git a/Casks/tunnelblick-beta.rb b/Casks/tunnelblick-beta.rb
index c644010fa..943e483c7 100644
--- a/Casks/tunnelblick-beta.rb
+++ b/Casks/tunnelblick-beta.rb
@@ -4,8 +4,7 @@ cask 'tunnelblick-beta' do
 
   # github.com/Tunnelblick/Tunnelblick/releases/download was verified as official when first introduced to the cask
   url "https://github.com/Tunnelblick/Tunnelblick/releases/download/v#{version.before_comma}/Tunnelblick_#{version.before_comma}_build_#{version.after_comma}.dmg"
-  appcast 'https://github.com/Tunnelblick/Tunnelblick/releases.atom',
-          checkpoint: '9379275ca363ad088dd95f18d3e86edcc81daabe6f362f8b16465fbdf700a6eb'
+  appcast 'https://github.com/Tunnelblick/Tunnelblick/releases.atom'
   name 'Tunnelblick'
   homepage 'https://www.tunnelblick.net/'
   gpg "#{url}.asc", key_id: '76df975a1c5642774fb09868ff5fd80e6bb9367e'
diff --git a/Casks/virtualbox-beta.rb b/Casks/virtualbox-beta.rb
index c9265ffb1..730f927db 100644
--- a/Casks/virtualbox-beta.rb
+++ b/Casks/virtualbox-beta.rb
@@ -3,8 +3,7 @@ cask 'virtualbox-beta' do
   sha256 '893081d852e3376710c2b16e13c17623b290ca1a013e962e8b6d9fd2de8bc911'
 
   url "http://download.virtualbox.org/virtualbox/#{version.before_comma}/VirtualBox-#{version.before_comma}-#{version.after_comma}-OSX.dmg"
-  appcast 'http://download.virtualbox.org/virtualbox/LATEST-BETA.TXT',
-          checkpoint: '1f753c9849a06ca6ad4b2df06d022a2dc42bee734c87d98759f911be52eb537b'
+  appcast 'http://download.virtualbox.org/virtualbox/LATEST-BETA.TXT'
   name 'Oracle VirtualBox'
   homepage 'https://www.virtualbox.org/wiki/Testbuilds'
 
diff --git a/Casks/virtualbox-extension-pack-beta.rb b/Casks/virtualbox-extension-pack-beta.rb
index a00805a76..836d883b2 100644
--- a/Casks/virtualbox-extension-pack-beta.rb
+++ b/Casks/virtualbox-extension-pack-beta.rb
@@ -3,8 +3,7 @@ cask 'virtualbox-extension-pack-beta' do
   sha256 'fd73ff4e6a1c8677c0252a94d21423d1e59191c3ab2df00891d37d559899f0c2'
 
   url "http://download.virtualbox.org/virtualbox/#{version.before_comma}/Oracle_VM_VirtualBox_Extension_Pack-#{version.before_comma}-#{version.after_comma}.vbox-extpack"
-  appcast 'http://download.virtualbox.org/virtualbox/LATEST-BETA.TXT',
-          checkpoint: 'f82b8f1c83d837d42c6a14edb6d18e650415b6550e68cf5efbc521194e310b43'
+  appcast 'http://download.virtualbox.org/virtualbox/LATEST-BETA.TXT'
   name 'Oracle VirtualBox Extension Pack'
   homepage 'https://www.virtualbox.org/'
 
diff --git a/Casks/visual-studio-code-insiders.rb b/Casks/visual-studio-code-insiders.rb
index b67dd6756..2e49c68b1 100644
--- a/Casks/visual-studio-code-insiders.rb
+++ b/Casks/visual-studio-code-insiders.rb
@@ -4,8 +4,7 @@ cask 'visual-studio-code-insiders' do
 
   # az764295.vo.msecnd.net/insider was verified as official when first introduced to the cask
   url "https://az764295.vo.msecnd.net/insider/#{version.after_comma}/VSCode-darwin-insider.zip"
-  appcast 'https://vscode-update.azurewebsites.net/api/update/darwin/insider/VERSION',
-          checkpoint: 'baf79fd2130d53acfeef40edd562ef9601905d2e6bc3c99d35fa9f9ee230f24b'
+  appcast 'https://vscode-update.azurewebsites.net/api/update/darwin/insider/VERSION'
   name 'Microsoft Visual Studio Code'
   name 'VS Code - Insiders'
   homepage 'https://code.visualstudio.com/insiders'
diff --git a/Casks/vivaldi-snapshot.rb b/Casks/vivaldi-snapshot.rb
index c639d5067..118441f15 100644
--- a/Casks/vivaldi-snapshot.rb
+++ b/Casks/vivaldi-snapshot.rb
@@ -3,8 +3,7 @@ cask 'vivaldi-snapshot' do
   sha256 '258ffd18fdd524bc441cc920b6266e52298f1d1837673ef925e01f2ebab5b4ec'
 
   url "https://downloads.vivaldi.com/snapshot/Vivaldi.#{version}.dmg"
-  appcast 'https://update.vivaldi.com/update/1.0/mac/appcast.xml',
-          checkpoint: '99db96697412f8c1e6876192503e021bdf11c06a74b11840ac72ee9475a8c87d'
+  appcast 'https://update.vivaldi.com/update/1.0/mac/appcast.xml'
   name 'Vivaldi'
   homepage 'https://vivaldi.com/'
 
diff --git a/Casks/weka-dev.rb b/Casks/weka-dev.rb
index c9ac3ee8a..9b05aa5d7 100644
--- a/Casks/weka-dev.rb
+++ b/Casks/weka-dev.rb
@@ -4,8 +4,7 @@ cask 'weka-dev' do
 
   # sourceforge.net/weka was verified as official when first introduced to the cask
   url "https://downloads.sourceforge.net/weka/weka-#{version.dots_to_hyphens}-oracle-jvm.dmg"
-  appcast 'https://sourceforge.net/projects/weka/rss',
-          checkpoint: '923267a39eca50cb2a0ab52ddee8c144a80a4357aeb6ac21906e74e08887706d'
+  appcast 'https://sourceforge.net/projects/weka/rss'
   name 'Weka'
   homepage 'https://www.cs.waikato.ac.nz/ml/weka/'
 
diff --git a/Casks/wine-devel.rb b/Casks/wine-devel.rb
index 06306a147..0884ec627 100644
--- a/Casks/wine-devel.rb
+++ b/Casks/wine-devel.rb
@@ -3,8 +3,7 @@ cask 'wine-devel' do
   sha256 '53c1405084ad7dc401ef8587552eb883dad2cedbc6597b085cc3f9b6fa3f8932'
 
   url "https://dl.winehq.org/wine-builds/macosx/pool/winehq-devel-#{version}.pkg"
-  appcast 'https://dl.winehq.org/wine-builds/macosx/download.html',
-          checkpoint: '5945f57ec1d18333bceffa8d6c0d6361e014bcd441d9bbc6b121d2a36eb1908c'
+  appcast 'https://dl.winehq.org/wine-builds/macosx/download.html'
   name 'WineHQ-devel'
   homepage 'https://wiki.winehq.org/MacOS'
 
diff --git a/Casks/wine-staging.rb b/Casks/wine-staging.rb
index 3d066a420..8d2698784 100644
--- a/Casks/wine-staging.rb
+++ b/Casks/wine-staging.rb
@@ -4,8 +4,7 @@ cask 'wine-staging' do
 
   # dl.winehq.org/wine-builds/macosx was verified as official when first introduced to the cask
   url "https://dl.winehq.org/wine-builds/macosx/pool/winehq-staging-#{version}.pkg"
-  appcast 'https://dl.winehq.org/wine-builds/macosx/download.html',
-          checkpoint: '5945f57ec1d18333bceffa8d6c0d6361e014bcd441d9bbc6b121d2a36eb1908c'
+  appcast 'https://dl.winehq.org/wine-builds/macosx/download.html'
   name 'WineHQ-staging'
   homepage 'https://www.wine-staging.com/'