diff --git a/.travis.yml b/.travis.yml
index 469a296ec..752c2b798 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -3,10 +3,7 @@ language: node_js
 addons:
   sauce_connect: true
 node_js:
- - 4 # to be removed 2018-04-30
- - 6 # to be removed 2019-04-01
  - 8 # to be removed 2019-12-31
- - 9 # to be removed 2018-06-30
  - lts/* # safety net; don't remove
  - node # safety net; don't remove
 
diff --git a/package.json b/package.json
index f8a80b075..2922daa09 100644
--- a/package.json
+++ b/package.json
@@ -30,7 +30,7 @@
     "test": "make test"
   },
   "engines": {
-    "node": ">=4"
+    "node": ">=8"
   },
   "dependencies": {
     "assertion-error": "^1.1.0",