diff --git a/.release-please-manifest.json b/.release-please-manifest.json
index b5e9157..684bdbe 100644
--- a/.release-please-manifest.json
+++ b/.release-please-manifest.json
@@ -1,3 +1,3 @@
 {
-  ".": "5.2.0"
+  ".": "5.2.1"
 }
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 5c8c155..f8176dd 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,13 @@
 
 All notable changes to the LaunchDarkly's EventSource implementation for C# will be documented in this file. This project adheres to [Semantic Versioning](http://semver.org).
 
+## [5.2.1](https://github.com/launchdarkly/dotnet-eventsource/compare/5.2.0...5.2.1) (2025-09-25)
+
+
+### Bug Fixes
+
+* Avoid showing authorization value in exception ([#111](https://github.com/launchdarkly/dotnet-eventsource/issues/111)) ([e5f7933](https://github.com/launchdarkly/dotnet-eventsource/commit/e5f793354ebb5b0445b7c747474f8cb98c21288b))
+
 ## [5.2.0](https://github.com/launchdarkly/dotnet-eventsource/compare/5.1.0...5.2.0) (2025-02-24)
 
 
diff --git a/src/LaunchDarkly.EventSource/LaunchDarkly.EventSource.csproj b/src/LaunchDarkly.EventSource/LaunchDarkly.EventSource.csproj
index 362a368..50b7a6c 100644
--- a/src/LaunchDarkly.EventSource/LaunchDarkly.EventSource.csproj
+++ b/src/LaunchDarkly.EventSource/LaunchDarkly.EventSource.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
     <!--x-release-please-start-version-->
-    <Version>5.2.0</Version>
+    <Version>5.2.1</Version>
     <!--x-release-please-end-->
     <TargetFrameworks>netstandard2.0;net462</TargetFrameworks>
     <PackageLicenseExpression>Apache-2.0</PackageLicenseExpression>