diff --git a/.travis.yml b/.travis.yml
index 3d4b29b..67db3da 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -12,9 +12,9 @@
 language: node_js
 
 node_js:
-  - "4"
   - "6"
   - "8"
+  - "10"
   - "node"
 
 branches:
diff --git a/appveyor.yml b/appveyor.yml
index 80b8976..a699c42 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -13,9 +13,9 @@
 # Test against these versions of Node.js.
 environment:
   matrix:
-    - nodejs_version: "4"
     - nodejs_version: "6"
     - nodejs_version: "8"
+    - nodejs_version: "10"
 
 # Install scripts. (runs after repo cloning)
 install: