diff --git a/Sources/PT.PM.Common/PT.PM.Common.csproj b/Sources/PT.PM.Common/PT.PM.Common.csproj
index 45ec05fe..3ebf2752 100644
--- a/Sources/PT.PM.Common/PT.PM.Common.csproj
+++ b/Sources/PT.PM.Common/PT.PM.Common.csproj
@@ -16,7 +16,7 @@
 
     <ItemGroup>
         <Compile Include="..\AssemblyInfoCommon.cs" Link="AssemblyInfoCommon.cs" />
-        <PackageReference Include="MessagePack" Version="1.9.3" />
+        <PackageReference Include="MessagePack" Version="1.9.11" />
         <PackageReference Include="MessagePackAnalyzer" Version="1.7.3.7" />
         <PackageReference Include="Microsoft.CSharp" Version="4.5.0" />
         <PackageReference Include="Newtonsoft.Json" Version="12.0.2" />