diff --git a/templates/csharp/copilot-plugin-existing-api/{{ProjectName}}.csproj.tpl b/templates/csharp/copilot-plugin-existing-api/{{ProjectName}}.csproj.tpl
index 689eed60d2..2c216cdaaf 100644
--- a/templates/csharp/copilot-plugin-existing-api/{{ProjectName}}.csproj.tpl
+++ b/templates/csharp/copilot-plugin-existing-api/{{ProjectName}}.csproj.tpl
@@ -8,6 +8,7 @@
 
   <ItemGroup>
     <ProjectCapability Include="TeamsFx" />
+    <ProjectCapability Include="CopilotPlugin" />
   </ItemGroup>
 
   <ItemGroup>
diff --git a/templates/csharp/copilot-plugin-from-oai-plugin/{{ProjectName}}.csproj.tpl b/templates/csharp/copilot-plugin-from-oai-plugin/{{ProjectName}}.csproj.tpl
index 689eed60d2..2c216cdaaf 100644
--- a/templates/csharp/copilot-plugin-from-oai-plugin/{{ProjectName}}.csproj.tpl
+++ b/templates/csharp/copilot-plugin-from-oai-plugin/{{ProjectName}}.csproj.tpl
@@ -8,6 +8,7 @@
 
   <ItemGroup>
     <ProjectCapability Include="TeamsFx" />
+    <ProjectCapability Include="CopilotPlugin" />
   </ItemGroup>
 
   <ItemGroup>
diff --git a/templates/csharp/copilot-plugin-from-scratch/{{ProjectName}}.csproj.tpl b/templates/csharp/copilot-plugin-from-scratch/{{ProjectName}}.csproj.tpl
index b2ca8d674b..d72115b1f9 100644
--- a/templates/csharp/copilot-plugin-from-scratch/{{ProjectName}}.csproj.tpl
+++ b/templates/csharp/copilot-plugin-from-scratch/{{ProjectName}}.csproj.tpl
@@ -8,6 +8,7 @@
 
   <ItemGroup>
     <ProjectCapability Include="TeamsFx" />
+    <ProjectCapability Include="CopilotPlugin" />
   </ItemGroup>
 
   <ItemGroup>