diff --git a/.travis.yml b/.travis.yml
index 797ab53e..d7290489 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -20,6 +20,7 @@ addons:
     - libcurl4-openssl-dev
     - libdw-dev
     - libelf-dev
+    - libruby
     - libzzip-dev
     - make
     - tree