diff --git a/harbor-demo/src/Kuestenlogik.Bowire.Samples.Combined/Kuestenlogik.Bowire.Samples.Combined.csproj b/harbor-demo/src/Kuestenlogik.Bowire.Samples.Combined/Kuestenlogik.Bowire.Samples.Combined.csproj
index 3b1b8b6..637f2c7 100644
--- a/harbor-demo/src/Kuestenlogik.Bowire.Samples.Combined/Kuestenlogik.Bowire.Samples.Combined.csproj
+++ b/harbor-demo/src/Kuestenlogik.Bowire.Samples.Combined/Kuestenlogik.Bowire.Samples.Combined.csproj
@@ -6,7 +6,7 @@
     <PackageReference Include="Kuestenlogik.Bowire.Protocol.SignalR" Version="2.4.0" />
     <PackageReference Include="Kuestenlogik.Bowire.Protocol.WebSocket" Version="2.4.0" />
     <PackageReference Include="Kuestenlogik.Bowire.Protocol.Sse" Version="2.4.0" />
-    <PackageReference Include="Grpc.AspNetCore" Version="2.80.0" />
+    <PackageReference Include="Grpc.AspNetCore" Version="2.83.0" />
     <PackageReference Include="Grpc.AspNetCore.Server.Reflection" Version="2.80.0" />
     <PackageReference Include="Microsoft.AspNetCore.OpenApi" Version="10.0.10" />
     <ProjectReference Include="..\Kuestenlogik.Bowire.Samples.Shared\Kuestenlogik.Bowire.Samples.Shared.csproj" />
diff --git a/harbor-demo/src/Kuestenlogik.Bowire.Samples.Fleet/Kuestenlogik.Bowire.Samples.Fleet.csproj b/harbor-demo/src/Kuestenlogik.Bowire.Samples.Fleet/Kuestenlogik.Bowire.Samples.Fleet.csproj
index b1b5f23..447c5de 100644
--- a/harbor-demo/src/Kuestenlogik.Bowire.Samples.Fleet/Kuestenlogik.Bowire.Samples.Fleet.csproj
+++ b/harbor-demo/src/Kuestenlogik.Bowire.Samples.Fleet/Kuestenlogik.Bowire.Samples.Fleet.csproj
@@ -1,6 +1,6 @@
 <Project Sdk="Microsoft.NET.Sdk.Web">
   <ItemGroup>
-    <PackageReference Include="Grpc.AspNetCore" Version="2.80.0" />
+    <PackageReference Include="Grpc.AspNetCore" Version="2.83.0" />
     <PackageReference Include="Grpc.AspNetCore.Server.Reflection" Version="2.80.0" />
     <PackageReference Include="Grpc.Tools" Version="2.83.0" PrivateAssets="All" />
     <ProjectReference Include="..\Kuestenlogik.Bowire.Samples.Shared\Kuestenlogik.Bowire.Samples.Shared.csproj" />
diff --git a/harbor-demo/src/Kuestenlogik.Bowire.Samples.Grpc/Kuestenlogik.Bowire.Samples.Grpc.csproj b/harbor-demo/src/Kuestenlogik.Bowire.Samples.Grpc/Kuestenlogik.Bowire.Samples.Grpc.csproj
index 6c6b4f7..d61b6d5 100644
--- a/harbor-demo/src/Kuestenlogik.Bowire.Samples.Grpc/Kuestenlogik.Bowire.Samples.Grpc.csproj
+++ b/harbor-demo/src/Kuestenlogik.Bowire.Samples.Grpc/Kuestenlogik.Bowire.Samples.Grpc.csproj
@@ -2,7 +2,7 @@
   <ItemGroup>
     <PackageReference Include="Kuestenlogik.Bowire" Version="2.4.0" />
     <PackageReference Include="Kuestenlogik.Bowire.Protocol.Grpc" Version="2.4.0" />
-    <PackageReference Include="Grpc.AspNetCore" Version="2.80.0" />
+    <PackageReference Include="Grpc.AspNetCore" Version="2.83.0" />
     <PackageReference Include="Grpc.AspNetCore.Server.Reflection" Version="2.80.0" />
     <!-- gRPC-Web middleware: the same HarborService is reachable over
          both native HTTP/2 (bowire grpc@host:5110) and gRPC-Web over
diff --git a/harbor-demo/src/Kuestenlogik.Bowire.Samples.SchemaSemantics/Kuestenlogik.Bowire.Samples.SchemaSemantics.csproj b/harbor-demo/src/Kuestenlogik.Bowire.Samples.SchemaSemantics/Kuestenlogik.Bowire.Samples.SchemaSemantics.csproj
index f8a762f..ccc2c35 100644
--- a/harbor-demo/src/Kuestenlogik.Bowire.Samples.SchemaSemantics/Kuestenlogik.Bowire.Samples.SchemaSemantics.csproj
+++ b/harbor-demo/src/Kuestenlogik.Bowire.Samples.SchemaSemantics/Kuestenlogik.Bowire.Samples.SchemaSemantics.csproj
@@ -1,6 +1,6 @@
 <Project Sdk="Microsoft.NET.Sdk.Web">
   <ItemGroup>
-    <PackageReference Include="Grpc.AspNetCore" Version="2.80.0" />
+    <PackageReference Include="Grpc.AspNetCore" Version="2.83.0" />
     <PackageReference Include="Grpc.AspNetCore.Server.Reflection" Version="2.80.0" />
     <!-- gRPC-Web so a Bowire client running standalone-mode in a
          pure HTTP/1.1 environment (browser-fronted, locked-down
diff --git a/harbor-demo/src/Kuestenlogik.Bowire.Samples.TacticalApi/Kuestenlogik.Bowire.Samples.TacticalApi.csproj b/harbor-demo/src/Kuestenlogik.Bowire.Samples.TacticalApi/Kuestenlogik.Bowire.Samples.TacticalApi.csproj
index 9ca32fa..b6c87f1 100644
--- a/harbor-demo/src/Kuestenlogik.Bowire.Samples.TacticalApi/Kuestenlogik.Bowire.Samples.TacticalApi.csproj
+++ b/harbor-demo/src/Kuestenlogik.Bowire.Samples.TacticalApi/Kuestenlogik.Bowire.Samples.TacticalApi.csproj
@@ -6,13 +6,13 @@
 
   <ItemGroup>
     <PackageReference Include="Kuestenlogik.Bowire" Version="2.4.0" />
-    <PackageReference Include="Grpc.AspNetCore" Version="2.80.0" />
+    <PackageReference Include="Grpc.AspNetCore" Version="2.83.0" />
     <!-- gRPC-Web middleware so the same Situation service is reachable
          over both native HTTP/2 (bowire tacticalapi@host:5120) and
          gRPC-Web over HTTP/1.1, mirroring Rheinmetall TacNet's
          dual-port (4267 / 4268) pattern documented upstream. -->
     <PackageReference Include="Grpc.AspNetCore.Web" Version="2.80.0" />
-    <PackageReference Include="Grpc.Tools" Version="2.80.0">
+    <PackageReference Include="Grpc.Tools" Version="2.83.0">
       <PrivateAssets>all</PrivateAssets>
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
     </PackageReference>
diff --git a/harbor-demo/src/Kuestenlogik.Bowire.Samples.Vulnerable/Kuestenlogik.Bowire.Samples.Vulnerable.csproj b/harbor-demo/src/Kuestenlogik.Bowire.Samples.Vulnerable/Kuestenlogik.Bowire.Samples.Vulnerable.csproj
index 0acd947..825735d 100644
--- a/harbor-demo/src/Kuestenlogik.Bowire.Samples.Vulnerable/Kuestenlogik.Bowire.Samples.Vulnerable.csproj
+++ b/harbor-demo/src/Kuestenlogik.Bowire.Samples.Vulnerable/Kuestenlogik.Bowire.Samples.Vulnerable.csproj
@@ -20,7 +20,7 @@
     <!-- gRPC + Server Reflection versions match
          Kuestenlogik.Bowire.Samples.Grpc to keep the samples
          solution coherent. -->
-    <PackageReference Include="Grpc.AspNetCore" Version="2.80.0" />
+    <PackageReference Include="Grpc.AspNetCore" Version="2.83.0" />
     <PackageReference Include="Grpc.AspNetCore.Server.Reflection" Version="2.80.0" />
   </ItemGroup>