diff --git a/.travis.yml b/.travis.yml
index 4262e820..9c88a7a5 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,6 +1,6 @@
 language: node_js
 node_js:
-  - 'node'
+  - '6.3.0'
 os:
   - linux
   - osx
diff --git a/appveyor.yml b/appveyor.yml
index f189f47a..4da65483 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -1,5 +1,5 @@
 environment:
-  nodejs_version: "5"
+  nodejs_version: "6"
 
 install:
   - ps: Install-Product node $env:nodejs_version