diff --git a/.travis.yml b/.travis.yml
index e58361c..2b50342 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -8,6 +8,7 @@ node_js:
 env:
   - CXX=g++-4.8
 addons:
+  srcclr: true
   apt:
     sources:
       - ubuntu-toolchain-r-test