diff --git a/CHANGELOG.md b/CHANGELOG.md
index 646a6a6190..8b585c6d17 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -69,8 +69,8 @@ Please see the [Envoy documentation](https://www.envoyproxy.io/docs/envoy/latest
 
 (no changes yet)
 
-## [1.12.3-rc.3] April 07, 2021
-[1.12.3-rc.3]: https://github.com/datawire/ambassador/compare/v1.12.2...v1.12.3-rc.3
+## [1.12.3-rc.4] April 10, 2021
+[1.12.3-rc.4]: https://github.com/datawire/ambassador/compare/v1.12.2...v1.12.3-rc.4
 
 Bugfix: Incorporate the Envoy 1.15.4 security update.
 
diff --git a/docs/yaml/versions.yml b/docs/yaml/versions.yml
index 2b6f18a301..32ea463a6c 100644
--- a/docs/yaml/versions.yml
+++ b/docs/yaml/versions.yml
@@ -1,2 +1,2 @@
-version: 1.12.3-rc.3
+version: 1.12.3-rc.4
 quoteVersion: 0.4.1