diff --git a/.travis.yml b/.travis.yml
index 4f29ef7..20fe0eb 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -7,6 +7,17 @@ python:
 
 node_js:
   - "0.10"
+  - "4"
+
+env:
+  - CXX=g++-4.8
+
+addons:
+  apt:
+    sources:
+      - ubuntu-toolchain-r-test
+    packages:
+      - g++-4.8
 
 sudo: false
 
diff --git a/package.json b/package.json
index 1f79fc9..5fd75cb 100644
--- a/package.json
+++ b/package.json
@@ -25,8 +25,8 @@
     "express-hawkauth": "0.3.0",
     "express-logging": "git://github.com/mozilla-services/express-logging.git",
     "git-rev": "0.2.1",
-    "heapdump": "0.3.5",
-    "hiredis": "0.2.0",
+    "heapdump": "0.3.7",
+    "hiredis": "0.4.1",
     "hkdf": "0.0.2",
     "mozlog": "1.0.2",
     "newrelic": "1.16.2",