diff --git a/.travis.yml b/.travis.yml
index 1feabd548..c6f17fd85 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,5 +1,7 @@
 language: node_js
 node_js:
-  - "node"
+- 4
+- 6
+- 8
 script: npm test
 sudo: false
diff --git a/appveyor.yml b/appveyor.yml
index e1d8a3818..e38544f7b 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -1,7 +1,9 @@
 # Test against this version of Node.js
 environment:
   matrix:
-  - nodejs_version: "6.0"
+  - nodejs_version: "4"
+  - nodejs_version: "6"
+  - nodejs_version: "8"
 
 # Install scripts. (runs after repo cloning)
 install: