diff --git a/CHANGELOG.md b/CHANGELOG.md
index c920e5fc4..dac6f49a6 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,4 +1,4 @@
-## 0.4.0 (unreleased)
+## 0.4.0 (April 2, 2015)
 
 BACKWARDS INCOMPATIBILITIES:
 
diff --git a/version.go b/version.go
index 8862f9e35..bcabe0a71 100644
--- a/version.go
+++ b/version.go
@@ -9,4 +9,4 @@ const Version = "0.4.0"
 // A pre-release marker for the version. If this is "" (empty string)
 // then it means that it is a final release. Otherwise, this is a pre-release
 // such as "dev" (in development), "beta", "rc1", etc.
-const VersionPrerelease = "dev"
+const VersionPrerelease = ""