1 files changed, 3 insertions, 0 deletions
diff --git a/.travis.yml b/.travis.yml
index 4684b3f4f3..273b1d508a 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -16,10 +16,13 @@ compiler:
 
 addons:
   apt:
+    sources:
+    - ubuntu-toolchain-r-test
     packages:
     - language-pack-is
     - git-svn
     - apache2
+    - gcc-6
 
 matrix:
   include: