diff --git a/.release-please-manifest.json b/.release-please-manifest.json
index 538fe155..516377eb 100644
--- a/.release-please-manifest.json
+++ b/.release-please-manifest.json
@@ -1,3 +1,3 @@
 {
-  ".": "8.18.2"
+  ".": "8.18.3"
 }
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 9e182079..4b1b28ce 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,13 @@
 
 All notable changes to the LaunchDarkly Ruby SDK will be documented in this file. This project adheres to [Semantic Versioning](http://semver.org).
 
+## [8.18.3](https://github.com/launchdarkly/ruby-server-sdk/compare/8.18.2...8.18.3) (2026-10-09)
+
+
+### Bug Fixes
+
+* Prevent the DynamoDB store from failing when flags or segments exceed 1 MB ([#464](https://github.com/launchdarkly/ruby-server-sdk/issues/464)) ([3777ee1](https://github.com/launchdarkly/ruby-server-sdk/commit/3777ee173468af1d28821165b47f86c39e13bf7e))
+
 ## [8.18.2](https://github.com/launchdarkly/ruby-server-sdk/compare/8.18.1...8.18.2) (2026-10-06)
 
 
diff --git a/PROVENANCE.md b/PROVENANCE.md
index d298f7cd..66417834 100644
--- a/PROVENANCE.md
+++ b/PROVENANCE.md
@@ -9,7 +9,7 @@ To verify build provenance attestations, we recommend using the [GitHub CLI `att
 <!-- x-release-please-start-version -->
 ```
 # Set the version of the SDK to verify
-SDK_VERSION=8.18.2
+SDK_VERSION=8.18.3
 ```
 <!-- x-release-please-end -->
 
diff --git a/lib/ldclient-rb/version.rb b/lib/ldclient-rb/version.rb
index bec79ccb..b375234c 100644
--- a/lib/ldclient-rb/version.rb
+++ b/lib/ldclient-rb/version.rb
@@ -1,3 +1,3 @@
 module LaunchDarkly
-  VERSION = "8.18.2" # x-release-please-version
+  VERSION = "8.18.3" # x-release-please-version
 end