diff --git a/.travis.yml b/.travis.yml
index 9f30c183..f9406911 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -3,7 +3,7 @@ language: node_js
 node_js:
   # we recommend testing addons with the same minimum supported node version as Ember CLI
   # so that your addon works for all apps
-  - "4"
+  - "6"
 
 sudo: false
 dist: trusty
diff --git a/appveyor.yml b/appveyor.yml
index 9afc596e..b247476f 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -4,10 +4,7 @@
 environment:
   MOCHA_REPORTER: "mocha-appveyor-reporter"
   matrix:
-    - nodejs_version: "4"
     - nodejs_version: "6"
-    - nodejs_version: "8"
-    - nodejs_version: "9"
 
 branches:
   only:
diff --git a/package.json b/package.json
index 9c6f9859..23ff0b46 100644
--- a/package.json
+++ b/package.json
@@ -26,7 +26,7 @@
     "lodash.defaultsdeep": "^4.6.0"
   },
   "engines": {
-    "node": "^4.5 || 6.* || >= 7.*"
+    "node": "6.* || 8.* || >= 10.*"
   },
   "changelog": {
     "repo": "ember-cli/ember-cli-uglify",