diff --git a/.travis.yml b/.travis.yml
index 0102cc1b..e3408cf6 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -214,6 +214,7 @@ before_script:
   - mkdir build
   - cd build
   - export CFLAGS="-Wall -W $WFLAGS"
+  - export CCACHE_COMPRESS=true
   - cmake .. -DCMAKE_BUILD_TYPE=Release
 
 before_install: