diff --git a/appveyor.yml b/appveyor.yml
index da0989cf..38b0202e 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -1,5 +1,5 @@
 install:
-  - choco install gitversion.portable -pre -y
+  - choco install gitversion.portable -pre -y --version 4.0.0-beta0012
 before_build:
   - cmd: gitversion > version.json
   - cmd: git submodule update --init
diff --git a/build/travis.sh b/build/travis.sh
index e06e676f..29b62b8a 100755
--- a/build/travis.sh
+++ b/build/travis.sh
@@ -4,7 +4,7 @@ set -e
 SCRIPT_DIR=$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )
 
 # Before we run the build, get gitversion and generate a version.json.
-nuget install GitVersion.CommandLine -Version 3.6.5
+nuget install GitVersion.CommandLine -Version 4.0.0-beta0012
 mono ./GitVersion.CommandLine.3.6.5/tools/GitVersion.exe > version.json
 
 if [ "$TRAVIS_OS_NAME" == "linux" ]; then