diff --git a/.travis.yml b/.travis.yml
index fe8bdd8..fac1db7 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -4,6 +4,7 @@ language: cpp
 addons:
   apt:
     packages:
+    - gcc-4.9
     - g++-4.9
     - build-essential
     - libboost-program-options-dev