diff --git a/.travis.yml b/.travis.yml
index 3d58b4c7..9b6447ea 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -22,6 +22,7 @@ install:
   - cd zlib-1.2.8
   - ./configure
   - make
+  - sudo make install
   - cd ..
 
 script: