diff --git a/.travis.yml b/.travis.yml
index ee8c098..eaa1c0f 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -17,7 +17,10 @@ node_js:
   - '0.12'
   - '0.10'
 
-after_success: 'npm run coveralls'
+after_success:
+  - if [ $(echo "${TRAVIS_NODE_VERSION}" | cut -d'.' -f1) -ge 6 ]; then
+      npm run coveralls;
+    fi
 
 os:
   - linux