diff --git a/hjudge.JudgeHost/src/hjudge.JudgeHost.csproj b/hjudge.JudgeHost/src/hjudge.JudgeHost.csproj
index f430d96f2..482283cee 100644
--- a/hjudge.JudgeHost/src/hjudge.JudgeHost.csproj
+++ b/hjudge.JudgeHost/src/hjudge.JudgeHost.csproj
@@ -10,7 +10,7 @@
   <ItemGroup>
     <PackageReference Include="Microsoft.Extensions.Hosting" Version="5.0.0" />
     <PackageReference Include="RabbitMQ.Client" Version="6.2.1" />
-    <PackageReference Include="Google.Protobuf" Version="3.14.0" />
+    <PackageReference Include="Google.Protobuf" Version="3.17.2" />
     <PackageReference Include="Grpc" Version="2.37.1" />
   </ItemGroup>
 
diff --git a/hjudge.RpcInterface/hjudge.RpcInterface.csproj b/hjudge.RpcInterface/hjudge.RpcInterface.csproj
index 1936f5eda..9090ac96a 100644
--- a/hjudge.RpcInterface/hjudge.RpcInterface.csproj
+++ b/hjudge.RpcInterface/hjudge.RpcInterface.csproj
@@ -6,7 +6,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="Google.Protobuf" Version="3.14.0" />
+    <PackageReference Include="Google.Protobuf" Version="3.17.2" />
     <PackageReference Include="Grpc" Version="2.37.1" />
     <PackageReference Include="Grpc.Tools" Version="2.37.1">
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>