diff --git a/docs/migrations/version-2-to-3.md b/docs/migrations/version-2-to-3.md
index 68186b8c1c..e32f012407 100644
--- a/docs/migrations/version-2-to-3.md
+++ b/docs/migrations/version-2-to-3.md
@@ -12,7 +12,68 @@ Is not affected by this change.
 
 ### C#
 
-Is not affected by this change.
+#### System.TimeSpan is used when format is time
+
+This example used to generate a `string`, but is now instead using `System.TimeSpan`.
+
+```yaml
+type: object
+properties:
+  duration:
+    type: string
+    format: time
+```
+
+will generate
+
+```csharp
+public class TestClass {
+  private System.TimeSpan duration;
+  ...
+}
+```
+
+#### System.DateTime is used when format is date-time
+
+This example used to generate a `string`, but is now instead using `System.DateTime`.
+
+```yaml
+type: object
+properties:
+  dob:
+    type: string
+    format: date-time
+```
+
+will generate
+
+```csharp
+public class TestClass {
+  private System.DateTime dob;
+  ...
+}
+```
+
+#### System.Guid is used when format is uuid
+
+This example used to generate a `string`, but is now instead using `System.Guid`.
+
+```yaml
+type: object
+properties:
+  uniqueId:
+    type: string
+    format: uuid
+```
+
+will generate
+
+```csharp
+public class TestClass {
+  private System.Guid uniqueId;
+  ...
+}
+```
 
 ### Java
 
diff --git a/examples/generate-csharp-models/package-lock.json b/examples/generate-csharp-models/package-lock.json
index 56ab4e873b..c6c4ae4e1d 100644
--- a/examples/generate-csharp-models/package-lock.json
+++ b/examples/generate-csharp-models/package-lock.json
@@ -1,5 +1,5 @@
 {
-  "name": "typescript-interface",
+  "name": "generate-csharp-models",
   "lockfileVersion": 2,
   "requires": true,
   "packages": {
diff --git a/test/generators/csharp/CSharpConstrainer.spec.ts b/test/generators/csharp/CSharpConstrainer.spec.ts
index da9b035e3f..26fbb989d9 100644
--- a/test/generators/csharp/CSharpConstrainer.spec.ts
+++ b/test/generators/csharp/CSharpConstrainer.spec.ts
@@ -94,7 +94,12 @@ describe('CSharpConstrainer', () => {
       expect(type).toEqual('string');
     });
     test('should render System.DateTime', () => {
-      const model = new ConstrainedStringModel('test', undefined, { format: 'date-time' }, '');
+      const model = new ConstrainedStringModel(
+        'test',
+        undefined,
+        { format: 'date-time' },
+        ''
+      );
       const type = CSharpDefaultTypeMapping.String({
         constrainedModel: model,
         ...defaultOptions
@@ -102,7 +107,12 @@ describe('CSharpConstrainer', () => {
       expect(type).toEqual('System.DateTime');
     });
     test('should render TimeSpan', () => {
-      const model = new ConstrainedStringModel('test', undefined, { format: 'time' }, '');
+      const model = new ConstrainedStringModel(
+        'test',
+        undefined,
+        { format: 'time' },
+        ''
+      );
       const type = CSharpDefaultTypeMapping.String({
         constrainedModel: model,
         ...defaultOptions
@@ -110,7 +120,12 @@ describe('CSharpConstrainer', () => {
       expect(type).toEqual('System.TimeSpan');
     });
     test('should render Guid', () => {
-      const model = new ConstrainedStringModel('test', undefined, { format: 'uuid' }, '');
+      const model = new ConstrainedStringModel(
+        'test',
+        undefined,
+        { format: 'uuid' },
+        ''
+      );
       const type = CSharpDefaultTypeMapping.String({
         constrainedModel: model,
         ...defaultOptions