diff --git a/backend/src/CheapAnalysis.Api/CheapAnalysis.Api.csproj b/backend/src/CheapAnalysis.Api/CheapAnalysis.Api.csproj
index bf7e583..3250968 100644
--- a/backend/src/CheapAnalysis.Api/CheapAnalysis.Api.csproj
+++ b/backend/src/CheapAnalysis.Api/CheapAnalysis.Api.csproj
@@ -8,7 +8,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="FastEndpoints" Version="5.34.0" />
+    <PackageReference Include="FastEndpoints" Version="8.1.0" />
     <PackageReference Include="FastEndpoints.Swagger" Version="5.34.0" />
     <PackageReference Include="Serilog.AspNetCore" Version="8.0.3" />
     <!-- Initial error reporting (T-017); T-601 adds release tagging + PII scrubbing. -->