diff --git a/CHANGELOG.md b/CHANGELOG.md
index e657b96..bd44c4d 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,7 @@
+## 1.5.1 / 2020-03-14
+
+* [BUGFIX] promhttp: Remove another superfluous `WriteHeader` call.
+
 ## 1.5.0 / 2020-03-03
 
 * [FEATURE] promauto: Add a factory to allow automatic registration with a local registry. #713
diff --git a/VERSION b/VERSION
index bc80560..26ca594 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-1.5.0
+1.5.1