diff --git a/.travis.yml b/.travis.yml
index 7a89524..ece592c 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,8 +1,8 @@
 language: node_js
 node_js:
-  - "4"
-  - "5"
   - "6"
+  - "8"
+  - "9"
 env:
   - CXX=g++-4.8
 addons:
@@ -18,9 +18,9 @@ matrix:
   fast_finish: true
   include:
     - os: linux
-      node_js: "4"
+      node_js: "6"
       env: CXX=g++-4.8 TEST_SUITE=coveralls
     - os: linux
-      node_js: "4"
+      node_js: "6"
       env: CXX=g++-4.8 TEST_SUITE=lint
 script: npm run $TEST_SUITE