diff --git a/CHANGELOG.md b/CHANGELOG.md
index 65d2ade..c9577f7 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,4 +1,4 @@
-## v1.4.0 / 2017-05-12
+## v0.4.0 / 2017-05-12
 
 * [IMPROVEMENT] Improve mapping configuration parser #61
 * [IMPROVEMENT] Add increment/decrement support to Gauges #65