diff --git a/.travis.yml b/.travis.yml
index 8321a5a..62dbbc1 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -3,6 +3,7 @@ os:
   - linux
   - osx
 node_js:
+  - "4.6"
   - "5.11"
   - "6.1"
 before_install:
diff --git a/appveyor.yml b/appveyor.yml
index cc15980..5895f82 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -1,5 +1,8 @@
 environment:
-  nodejs_version: "5.11"
+  matrix:
+    - nodejs_version: "4.6"
+    - nodejs_version: "5.11"
+    - nodejs_version: "6.1"
 install:
   - ps: Install-Product node $env:nodejs_version
   - npm install