diff --git a/.travis.yml b/.travis.yml
index 69624ec3..6f5271d9 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -18,6 +18,7 @@ os:
   - linux
 
 node_js:
+  - "9"
   - "8"
   - "7"
   - "6"
diff --git a/appveyor.yml b/appveyor.yml
index 9f6f88ff..07a47e4e 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -9,6 +9,7 @@ environment:
     - nodejs_version: "6"
     - nodejs_version: "7"
     - nodejs_version: "8"
+    - nodejs_version: "9"
 
 platform:
   - x86