diff --git a/CHANGELOG.md b/CHANGELOG.md
index 82ce4b965b..4d6ff460de 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,14 @@
 # Changelog
 
+## 0.4.0 (2014-09-19)
+- Various performance enhancements: brings CPU usage down 85%+
+- Implemented dynamic sampling through dynamic housekeeping.
+- Memory storage driver is always on, BigQuery and InfluxDB are now optional storage backends.
+- Fix for DNS resolution crashes when contacting InfluxDB.
+- New containers are now detected using inotify.
+- Added pprof HTTP endpoint.
+- UI bugfixes.
+
 ## 0.3.0 (2014-09-05)
 - Support for Docker with LXC backend.
 - Added BigQuery storage driver.
diff --git a/info/version.go b/info/version.go
index 17a7801242..86757344d4 100644
--- a/info/version.go
+++ b/info/version.go
@@ -15,4 +15,4 @@
 package info
 
 // Version of cAdvisor.
-const VERSION = "0.3.0"
+const VERSION = "0.4.0"