diff --git a/CHANGELOG.md b/CHANGELOG.md
index 2009063e0..3144db1da 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -27,6 +27,8 @@ and this project adheres to [Semantic Versioning](http://semver.org/).
 
 - Fixed token instrospection field removed [PR #1438](https://github.com/3scale/APIcast/pull/1438) [THREESCALE-10591](https://issues.redhat.com/browse/THREESCALE-10591)
 
+- Fixed 100 response header are not handled when using `HTTPS_PROXY` [PR #1434](https://github.com/3scale/APIcast/pull/1434) [THREESCALE-10278](https://issues.redhat.com/browse/THREESCALE-10278)
+
 ### Added
 
 - Detect number of CPU shares when running on Cgroups V2 [PR #1410](https://github.com/3scale/apicast/pull/1410) [THREESCALE-10167](https://issues.redhat.com/browse/THREESCALE-10167)