CB-14066: Drop support for Node 4
diff --git a/.travis.yml b/.travis.yml
index 53f19a8..f50997f 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -3,9 +3,9 @@
 git:
   depth: 10
 node_js:
-  - "4"
   - "6"
   - "8"
+  - "10"
 install:
   - "npm install"
 script:
diff --git a/appveyor.yml b/appveyor.yml
index ffe5194..f34dfbd 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -3,10 +3,10 @@
 
 environment:
   matrix:
-  - nodejs_version: "4"
   - nodejs_version: "6"
   - nodejs_version: "8"
-  
+  - nodejs_version: "10"
+
 install:
   - ps: Install-Product node $env:nodejs_version
   - npm install
diff --git a/package.json b/package.json
index 305030c..04ede01 100644
--- a/package.json
+++ b/package.json
@@ -45,7 +45,7 @@
     "jasmine": "jasmine spec/fetch.spec.js spec/fetch-unit.spec.js"
   },
   "engines": {
-    "node": ">=4.0.0",
-    "npm": ">= 2.5.1"
+    "node": ">= 6",
+    "npm": ">= 3"
   }
 }