diff --git a/CHANGELOG.md b/CHANGELOG.md
index 5635e68..a95dd2f 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,6 +5,13 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](http://keepachangelog.com/) and this
 project adheres to [Semantic Versioning](http://semver.org/).
 
+## [2.5.1](https://github.com/terraform-google-modules/terraform-google-event-function/compare/v2.5.0...v2.5.1) (2023-01-20)
+
+
+### Bug Fixes
+
+* set optional max_instances to default value for CI ([#133](https://github.com/terraform-google-modules/terraform-google-event-function/issues/133)) ([63c98bd](https://github.com/terraform-google-modules/terraform-google-event-function/commit/63c98bd3a86cb5f04d0a2a71fc182e5aca15f829))
+
 ## [2.5.0](https://github.com/terraform-google-modules/terraform-google-event-function/compare/v2.4.0...v2.5.0) (2022-07-22)
 
 
diff --git a/modules/event-folder-log-entry/versions.tf b/modules/event-folder-log-entry/versions.tf
index d74f712..ee1cbf9 100644
--- a/modules/event-folder-log-entry/versions.tf
+++ b/modules/event-folder-log-entry/versions.tf
@@ -25,7 +25,7 @@ terraform {
   }
 
   provider_meta "google" {
-    module_name = "blueprints/terraform/terraform-google-event-function:event-folder-log-entry/v2.5.0"
+    module_name = "blueprints/terraform/terraform-google-event-function:event-folder-log-entry/v2.5.1"
   }
 
 }
diff --git a/modules/event-project-log-entry/versions.tf b/modules/event-project-log-entry/versions.tf
index 691d7c0..727e73a 100644
--- a/modules/event-project-log-entry/versions.tf
+++ b/modules/event-project-log-entry/versions.tf
@@ -25,7 +25,7 @@ terraform {
   }
 
   provider_meta "google" {
-    module_name = "blueprints/terraform/terraform-google-event-function:event-project-log-entry/v2.5.0"
+    module_name = "blueprints/terraform/terraform-google-event-function:event-project-log-entry/v2.5.1"
   }
 
 }
diff --git a/modules/repository-function/versions.tf b/modules/repository-function/versions.tf
index 20c9a5f..63dadb7 100644
--- a/modules/repository-function/versions.tf
+++ b/modules/repository-function/versions.tf
@@ -25,7 +25,7 @@ terraform {
   }
 
   provider_meta "google" {
-    module_name = "blueprints/terraform/terraform-google-event-function:repository-function/v2.5.0"
+    module_name = "blueprints/terraform/terraform-google-event-function:repository-function/v2.5.1"
   }
 
 }
diff --git a/versions.tf b/versions.tf
index 2eee074..9bce797 100644
--- a/versions.tf
+++ b/versions.tf
@@ -25,7 +25,7 @@ terraform {
   }
 
   provider_meta "google" {
-    module_name = "blueprints/terraform/terraform-google-event-function/v2.5.0"
+    module_name = "blueprints/terraform/terraform-google-event-function/v2.5.1"
   }
 
 }