diff --git a/.travis.yml b/.travis.yml
index 2c25c5c..fa417a7 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -4,8 +4,11 @@ env:
   - CXX=g++-4.8
 addons:
   apt:
+    sources:
+      - ubuntu-toolchain-r-test
     packages:
       - libasound2-dev
+      - g++-4.8
 cache:
   directories:
     - node_modules