diff --git a/CHANGELOG.md b/CHANGELOG.md
index cc0d551a4..821d303e6 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,13 @@
 # Changelog
 
+## 0.40.0
+
+The Sentry SDK team is happy to announce the immediate availability of Sentry Go SDK v0.40.0.
+
+### Bug Fixes
+
+- Disable `DisableTelemetryBuffer` flag and noop Telemetry Buffer, to prevent a panic at runtime ([#1149](https://github.com/getsentry/sentry-go/pull/1149)).
+
 ## 0.39.0
 
 The Sentry SDK team is happy to announce the immediate availability of Sentry Go SDK v0.39.0.