diff --git a/.travis.yml b/.travis.yml
index aff00086..a7bb9f63 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -6,11 +6,24 @@ node_js:
   - 4.0
   - 4.1
   - 4.2
+  - 4.3
+  - 5.6
 matrix:
     allow_failures:
         - node_js: 4.0
         - node_js: 4.1
         - node_js: 4.2
+        - node_js: 4.3
+        - node_js: 5.6
 env:
-    - TEST_SUITE=unit
+  global:
+    - CXX=g++-4.8
+  matrix:
+    - TEST_SUITE=units
 script: "npm run $TEST_SUITE"
+addons:
+  apt:
+    sources:
+      - ubuntu-toolchain-r-test
+    packages:
+      - g++-4.8