diff --git a/CHANGELOG.md b/CHANGELOG.md
index 6f7dca41..df5d5ae0 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,7 @@
+# 1.4.23 (27 September 2021)
+- [#635](https://github.com/WireMock-Net/WireMock.Net/pull/635) - WireMock.Net.FluentAssertions : upgrade to latest FluentAssertions [feature] contributed by [StefH](https://github.com/StefH)
+- [#634](https://github.com/WireMock-Net/WireMock.Net/issues/634) - Upgrade to latest FluentAssertions [bug]
+
 # 1.4.22 (22 September 2021)
 - [#633](https://github.com/WireMock-Net/WireMock.Net/pull/633) - Implement Random Delay [feature] contributed by [StefH](https://github.com/StefH)
 
diff --git a/PackageReleaseNotes.txt b/PackageReleaseNotes.txt
index 3d621f92..c8bcf40b 100644
--- a/PackageReleaseNotes.txt
+++ b/PackageReleaseNotes.txt
@@ -1,4 +1,5 @@
-# 1.4.22 (22 September 2021)
-- #633 Implement Random Delay [feature]
+# 1.4.23 (27 September 2021)
+- #635 WireMock.Net.FluentAssertions : upgrade to latest FluentAssertions [feature]
+- #634 Upgrade to latest FluentAssertions [bug]
 
 The full release notes can be found here: https://github.com/WireMock-Net/WireMock.Net/blob/master/CHANGELOG.md
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