diff --git a/.travis.yml b/.travis.yml
index 0c03e389..7a37fc7a 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -3,6 +3,7 @@ env:
   - DB=sqlite
 before_install:
   - sudo apt-get install libicu-dev -y
+  - gem install charlock_holmes -v="0.6.8"
   - echo "yes" | gem uninstall json ffi
 branches:
   only: