diff --git a/CHANGELOG.md b/CHANGELOG.md
index 6249c961..81ddb7cf 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,6 @@
+## 1.4.21
+* Fix: pagerduty integration key, custom details.
+
 ## 1.4.20
 * Support for defining pagerduty integration key, custom details.
 * Fix: Better error handling for non 20X error codes.