diff --git a/ElevenLabs-DotNet-Proxy/ElevenLabs-DotNet-Proxy.csproj b/ElevenLabs-DotNet-Proxy/ElevenLabs-DotNet-Proxy.csproj
index 17cef2f..7608b23 100644
--- a/ElevenLabs-DotNet-Proxy/ElevenLabs-DotNet-Proxy.csproj
+++ b/ElevenLabs-DotNet-Proxy/ElevenLabs-DotNet-Proxy.csproj
@@ -24,6 +24,7 @@
     <PackageReleaseNotes>
 Version 3.0.0
 - Renamed ElevenLabsProxyStartup to ElevenLabsProxy
+- Deprecated ValidateAuthentication
 Version 2.2.2
 - Updated EndpointRouteBuilder with optional route prefix parameter
 Version 2.2.1