diff --git a/CHANGELOG.md b/CHANGELOG.md
index 41c160db2..2f70b04fe 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -3,6 +3,13 @@
 All notable changes to this project will be documented in this file.
 This project adheres to [Semantic Versioning](http://semver.org/).
 
+## [3.31.1] - 2023-09-26
+### Changed
+- docs: updates roadmap.
+
+### Fixed
+- fix: path parameter extraction shouldn't throw NPE for regex routes.
+
 ## [3.31.0] - 2023-09-23
 ### Added
 - feat(lambda): falls back to default Lambda bundle config dir if no config dir set.
diff --git a/gradle.properties b/gradle.properties
index 2b1ef140f..1d45da446 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -1 +1 @@
-projectVersion=0.0.0-SNAPSHOT
+projectVersion=3.31.1