diff --git a/third_party/dotnet/devtools/src/generator/Templates/DevToolsSessionDomains.hbs b/third_party/dotnet/devtools/src/generator/Templates/DevToolsSessionDomains.hbs
index 02658ac0f90d7..fc88ce6ec2241 100644
--- a/third_party/dotnet/devtools/src/generator/Templates/DevToolsSessionDomains.hbs
+++ b/third_party/dotnet/devtools/src/generator/Templates/DevToolsSessionDomains.hbs
@@ -1,3 +1,4 @@
+// <auto-generated />
 namespace {{rootNamespace}}
 {
     using System;
diff --git a/third_party/dotnet/devtools/src/generator/Templates/command.hbs b/third_party/dotnet/devtools/src/generator/Templates/command.hbs
index e5ccc3dc124e2..d6bbd80320fec 100644
--- a/third_party/dotnet/devtools/src/generator/Templates/command.hbs
+++ b/third_party/dotnet/devtools/src/generator/Templates/command.hbs
@@ -1,3 +1,4 @@
+// <auto-generated />
 namespace {{rootNamespace}}.{{domain.Name}}
 {
     using Newtonsoft.Json;
diff --git a/third_party/dotnet/devtools/src/generator/Templates/domain.hbs b/third_party/dotnet/devtools/src/generator/Templates/domain.hbs
index b7b46a2540645..e644657260771 100644
--- a/third_party/dotnet/devtools/src/generator/Templates/domain.hbs
+++ b/third_party/dotnet/devtools/src/generator/Templates/domain.hbs
@@ -1,3 +1,4 @@
+// <auto-generated />
 namespace {{rootNamespace}}.{{domain.Name}}
 {
     using System;
diff --git a/third_party/dotnet/devtools/src/generator/Templates/event.hbs b/third_party/dotnet/devtools/src/generator/Templates/event.hbs
index d9298e694c325..666bf7d6cf909 100644
--- a/third_party/dotnet/devtools/src/generator/Templates/event.hbs
+++ b/third_party/dotnet/devtools/src/generator/Templates/event.hbs
@@ -1,4 +1,5 @@
-namespace {{rootNamespace}}.{{domain.Name}}
+// <auto-generated />
+namespace {{rootNamespace}}.{{domain.Name}}
 {
     using System;
     using Newtonsoft.Json;
diff --git a/third_party/dotnet/devtools/src/generator/Templates/project.hbs b/third_party/dotnet/devtools/src/generator/Templates/project.hbs
index 604484cee6f5c..1b8a4fa3994b7 100644
--- a/third_party/dotnet/devtools/src/generator/Templates/project.hbs
+++ b/third_party/dotnet/devtools/src/generator/Templates/project.hbs
@@ -1,4 +1,5 @@
-<Project Sdk="Microsoft.NET.Sdk">
+// <auto-generated />
+<Project Sdk="Microsoft.NET.Sdk">
     <PropertyGroup>
         <TargetFrameworks>net45;net46;net47;netstandard2.0</TargetFrameworks>
         <GeneratePackageOnBuild>true</GeneratePackageOnBuild>
diff --git a/third_party/dotnet/devtools/src/generator/Templates/type-enum.hbs b/third_party/dotnet/devtools/src/generator/Templates/type-enum.hbs
index e7230cdb7a26f..ee9c77d4c8e2a 100644
--- a/third_party/dotnet/devtools/src/generator/Templates/type-enum.hbs
+++ b/third_party/dotnet/devtools/src/generator/Templates/type-enum.hbs
@@ -1,3 +1,4 @@
+// <auto-generated />
 namespace {{rootNamespace}}.{{domain.Name}}
 {
     using Newtonsoft.Json;
diff --git a/third_party/dotnet/devtools/src/generator/Templates/type-hash.hbs b/third_party/dotnet/devtools/src/generator/Templates/type-hash.hbs
index 08440e9edbc67..ab16e6b5f73ce 100644
--- a/third_party/dotnet/devtools/src/generator/Templates/type-hash.hbs
+++ b/third_party/dotnet/devtools/src/generator/Templates/type-hash.hbs
@@ -1,4 +1,5 @@
-namespace {{rootNamespace}}.{{domain.Name}}
+// <auto-generated />
+namespace {{rootNamespace}}.{{domain.Name}}
 {
     using System.Collections.Generic;
 
diff --git a/third_party/dotnet/devtools/src/generator/Templates/type-object.hbs b/third_party/dotnet/devtools/src/generator/Templates/type-object.hbs
index c0d4e25759e27..44fd327953027 100644
--- a/third_party/dotnet/devtools/src/generator/Templates/type-object.hbs
+++ b/third_party/dotnet/devtools/src/generator/Templates/type-object.hbs
@@ -1,4 +1,5 @@
-namespace {{rootNamespace}}.{{domain.Name}}
+// <auto-generated />
+namespace {{rootNamespace}}.{{domain.Name}}
 {
     using Newtonsoft.Json;