diff --git a/Red.CommonMarkRenderer.csproj b/Red.CommonMarkRenderer.csproj
index 5b81e6d..8aa0f4c 100644
--- a/Red.CommonMarkRenderer.csproj
+++ b/Red.CommonMarkRenderer.csproj
@@ -19,6 +19,6 @@
   </PropertyGroup>
   <ItemGroup>
     <PackageReference Include="CommonMark.NET" Version="0.15.1" />
-    <PackageReference Include="RHttpServer" Version="4.0.0" />
+    <PackageReference Include="RHttpServer" Version="5.1.0" />
   </ItemGroup>
 </Project>
\ No newline at end of file