diff --git a/.release-please-manifest.json b/.release-please-manifest.json
index 5c753b4..d06ed2b 100644
--- a/.release-please-manifest.json
+++ b/.release-please-manifest.json
@@ -1,3 +1,3 @@
 {
-  ".": "6.3.0"
+  ".": "6.3.1"
 }
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 812f8ee..81dca65 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,12 @@
 # Changelog
 
+## [6.3.1](https://github.com/mdp/rotp/compare/v6.3.0...v6.3.1) (2025-06-03)
+
+
+### Bug Fixes
+
+* Fix tests breaking in latest Ruby, update devcontainer to 3.3 ([#143](https://github.com/mdp/rotp/issues/143)) ([642deba](https://github.com/mdp/rotp/commit/642deba39d09206e133deb93bc109b4c7ca420cf))
+
 ## [6.3.0](https://github.com/mdp/rotp/compare/v6.2.2...v6.3.0) (2023-08-30)