diff --git a/src/Ardalis.HttpClientTestExtensions/HttpClientDeleteExtensionMethods.cs b/src/Ardalis.HttpClientTestExtensions/HttpClientDeleteExtensionMethods.cs
index 1c381f9..82431c2 100644
--- a/src/Ardalis.HttpClientTestExtensions/HttpClientDeleteExtensionMethods.cs
+++ b/src/Ardalis.HttpClientTestExtensions/HttpClientDeleteExtensionMethods.cs
@@ -46,6 +46,23 @@ public static async Task<HttpResponseMessage> DeleteAndEnsureNotFoundAsync(
     return response;
   }
 
+  /// <summary>
+  /// Ensures a DELETE to a requestUri returns a 405 Method Not Allowed response status code
+  /// </summary>
+  /// <param name="client"></param>
+  /// <param name="requestUri"></param>
+  /// <param name="output">Optional; used to provide details to standard output.</param>
+  /// <returns></returns>
+  public static async Task<HttpResponseMessage> DeleteAndEnsureMethodNotAllowedAsync(
+    this HttpClient client,
+    string requestUri,
+    ITestOutputHelper output = null)
+  {
+    var response = await client.DeleteAsync(requestUri, output);
+    response.EnsureMethodNotAllowed();
+    return response;
+  }
+
   /// <summary>
   /// Ensures a DELETE to a requestUri returns a 204 No Content response status code
   /// </summary>
diff --git a/src/Ardalis.HttpClientTestExtensions/HttpClientGetExtensionMethods.cs b/src/Ardalis.HttpClientTestExtensions/HttpClientGetExtensionMethods.cs
index 4ec391d..0255863 100644
--- a/src/Ardalis.HttpClientTestExtensions/HttpClientGetExtensionMethods.cs
+++ b/src/Ardalis.HttpClientTestExtensions/HttpClientGetExtensionMethods.cs
@@ -48,6 +48,23 @@ public static async Task<HttpResponseMessage> GetAndEnsureNotFoundAsync(
     return response;
   }
 
+  /// <summary>
+  /// Ensures a GET to a requestUri returns a 405 Method Not Allowed response status code
+  /// </summary>
+  /// <param name="client"></param>
+  /// <param name="requestUri"></param>
+  /// <param name="output">Optional; used to provide details to standard output.</param>
+  /// <returns></returns>
+  public static async Task<HttpResponseMessage> GetAndEnsureMethodNotAllowedAsync(
+    this HttpClient client,
+    string requestUri,
+    ITestOutputHelper output = null)
+  {
+    var response = await client.GetAsync(requestUri, output);
+    response.EnsureMethodNotAllowed();
+    return response;
+  }
+
   /// <summary>
   /// Makes a GET request to a requestUri and returns the response string
   /// </summary>
diff --git a/src/Ardalis.HttpClientTestExtensions/HttpClientPostExtensionMethods.cs b/src/Ardalis.HttpClientTestExtensions/HttpClientPostExtensionMethods.cs
index ac4f1b8..08a5ac9 100644
--- a/src/Ardalis.HttpClientTestExtensions/HttpClientPostExtensionMethods.cs
+++ b/src/Ardalis.HttpClientTestExtensions/HttpClientPostExtensionMethods.cs
@@ -88,6 +88,25 @@ public static async Task<HttpResponseMessage> PostAndEnsureForbiddenAsync(
     return response;
   }
 
+  /// <summary>
+  /// Ensures a POST to a requestUri returns a 405 Method Not Allowed response status code
+  /// </summary>
+  /// <param name="client"></param>
+  /// <param name="requestUri"></param>
+  /// <param name="content"></param>
+  /// <param name="output">Optional; used to provide details to standard output.</param>
+  /// <returns></returns>
+  public static async Task<HttpResponseMessage> PostAndEnsureMethodNotAllowedAsync(
+    this HttpClient client,
+    string requestUri,
+    HttpContent content,
+    ITestOutputHelper output = null)
+  {
+    var response = await client.PostAsync(requestUri, content, output);
+    response.EnsureMethodNotAllowed();
+    return response;
+  }
+
   /// <summary>
   /// Makes a POST request to a requestUri and ensures the response contains a substring
   /// </summary>
diff --git a/src/Ardalis.HttpClientTestExtensions/HttpClientPutExtensionMethods.cs b/src/Ardalis.HttpClientTestExtensions/HttpClientPutExtensionMethods.cs
index 2940a8d..a7f1168 100644
--- a/src/Ardalis.HttpClientTestExtensions/HttpClientPutExtensionMethods.cs
+++ b/src/Ardalis.HttpClientTestExtensions/HttpClientPutExtensionMethods.cs
@@ -31,7 +31,6 @@ public static async Task<T> PutAndDeserializeAsync<T>(
     return result;
   }
 
-
   /// <summary>
   /// Ensures a PUT to a requestUri returns a 404 Not Found response status code
   /// </summary>
@@ -50,6 +49,24 @@ public static async Task<HttpResponseMessage> PutAndEnsureNotFoundAsync(this Htt
     return response;
   }
 
+  /// <summary>
+  /// Ensures a PUT to a requestUri returns a 405 Method Not Allowed response status code
+  /// </summary>
+  /// <param name="client"></param>
+  /// <param name="requestUri"></param>
+  /// <param name="content"></param>
+  /// <param name="output">Optional; used to provide details to standard output.</param>
+  /// <returns></returns>
+  public static async Task<HttpResponseMessage> PutAndEnsureMethodNotAllowedAsync(this HttpClient client,
+    string requestUri,
+    HttpContent content,
+    ITestOutputHelper output = null)
+  {
+    var response = await client.PutAsync(requestUri, content, output);
+    response.EnsureMethodNotAllowed();
+    return response;
+  }
+
   /// <summary>
   /// Ensures a PUT to a requestUri returns a 401 Unauthorized response status code
   /// </summary>
diff --git a/src/Ardalis.HttpClientTestExtensions/HttpResponseMessageExtensionMethods.cs b/src/Ardalis.HttpClientTestExtensions/HttpResponseMessageExtensionMethods.cs
index 0b1f425..9735d7f 100644
--- a/src/Ardalis.HttpClientTestExtensions/HttpResponseMessageExtensionMethods.cs
+++ b/src/Ardalis.HttpClientTestExtensions/HttpResponseMessageExtensionMethods.cs
@@ -17,6 +17,16 @@ public static void EnsureNotFound(this HttpResponseMessage response)
     response.Ensure(HttpStatusCode.NotFound);
   }
 
+  /// <summary>
+  /// Ensures a response has a status code 405 Method Not Allowed
+  /// </summary>
+  /// <param name="response"></param>
+  /// <return></return>
+  public static void EnsureMethodNotAllowed(this HttpResponseMessage response)
+  {
+    response.Ensure(HttpStatusCode.MethodNotAllowed);
+  }
+
   /// <summary>
   /// Ensures a response has a status code 204 No Content
   /// </summary>
diff --git a/src/Ardalis.HttpClientTestExtensions/docs/README.md b/src/Ardalis.HttpClientTestExtensions/docs/README.md
index 16f0597..e156116 100644
--- a/src/Ardalis.HttpClientTestExtensions/docs/README.md
+++ b/src/Ardalis.HttpClientTestExtensions/docs/README.md
@@ -109,6 +109,9 @@ await client.GetAndEnsureForbiddenAsync("/authors/1");
 
 // GET and assert a 404 is returned
 await client.GetAndEnsureNotFoundAsync("/authors/-1");
+
+// GET and assert a 405 is returned
+await client.GetAndEnsureMethodNotAllowedAsync("/wrongendpoint", content)
 ```
 
 #### [POST](src\Ardalis.HttpClientTestExtensions\HttpClientPostExtensionMethods.cs)
@@ -138,6 +141,9 @@ await client.PostAndEnsureForbiddenAsync("/authors", content);
 
 // POST and assert a 404 is returned
 await client.PostAndEnsureNotFoundAsync("/wrongendpoint", content)
+
+// POST and assert a 405 is returned
+await client.PostAndEnsureMethodNotAllowedAsync("/wrongendpoint", content)
 ```
 
 #### [PUT](src\Ardalis.HttpClientTestExtensions\HttpClientPutExtensionMethods.cs)
@@ -166,6 +172,9 @@ await client.PutAndEnsureForbiddenAsync("/authors/1", content);
 
 // PUT and assert a 404 is returned
 await client.PutAndEnsureNotFoundAsync("/wrongendpoint", content)
+
+// PUT and assert a 405 is returned
+await client.PutAndEnsureMethodNotAllowedAsync("/wrongendpoint", content)
 ```
 
 #### [DELETE](src\Ardalis.HttpClientTestExtensions\HttpClientDeleteExtensionMethods.cs)
@@ -195,6 +204,9 @@ await client.DeleteAndEnsureForbiddenAsync("/authors/1");
 
 // DELETE and assert a 404 is returned
 await client.DeleteAndEnsureNotFoundAsync("/wrongendpoint");
+
+// DELETE and assert a 405 is returned
+await client.DeleteAndEnsureMethodNotAllowedAsync("/wrongendpoint", content)
 ```
 
 ### [HttpResponseMessage](src\Ardalis.HttpClientTestExtensions\HttpResponseMessageExtensionMethods.cs)
@@ -220,6 +232,9 @@ response.EnsureForbidden();
 // Assert a response has a status code of 404
 response.EnsureNotFound();
 
+// Assert a response has a status code of 405
+response.EnsureMethodNotAllowed();
+
 // Assert a response has a given status code
 response.Ensure(HttpStatusCode.Created);
 
diff --git a/tests/Ardalis.HttpClientTestExtensions.Api/Endpoints/MethodNotAllowedEndpoints/NoDelete.cs b/tests/Ardalis.HttpClientTestExtensions.Api/Endpoints/MethodNotAllowedEndpoints/NoDelete.cs
new file mode 100644
index 0000000..05d52aa
--- /dev/null
+++ b/tests/Ardalis.HttpClientTestExtensions.Api/Endpoints/MethodNotAllowedEndpoints/NoDelete.cs
@@ -0,0 +1,17 @@
+using Ardalis.ApiEndpoints;
+using Microsoft.AspNetCore.Mvc;
+
+namespace Ardalis.HttpClientTestExtensions.Api.Endpoints.MethodNotAllowedEndpoints;
+
+public class NoDelete : EndpointBaseSync
+  .WithoutRequest
+  .WithResult<NoContentResult>
+
+{
+  [Route("/nodelete")]
+  [AcceptVerbs("GET", "PUT", "POST")]
+  public override NoContentResult Handle()
+  {
+    return NoContent();
+  }
+}
diff --git a/tests/Ardalis.HttpClientTestExtensions.Api/Endpoints/MethodNotAllowedEndpoints/NoGet.cs b/tests/Ardalis.HttpClientTestExtensions.Api/Endpoints/MethodNotAllowedEndpoints/NoGet.cs
new file mode 100644
index 0000000..0621b25
--- /dev/null
+++ b/tests/Ardalis.HttpClientTestExtensions.Api/Endpoints/MethodNotAllowedEndpoints/NoGet.cs
@@ -0,0 +1,17 @@
+using Ardalis.ApiEndpoints;
+using Microsoft.AspNetCore.Mvc;
+
+namespace Ardalis.HttpClientTestExtensions.Api.Endpoints.MethodNotAllowedEndpoints;
+
+public class NoGet : EndpointBaseSync
+  .WithoutRequest
+  .WithResult<NoContentResult>
+
+{
+  [Route("/noget")]
+  [AcceptVerbs("DELETE", "PUT", "POST")]
+  public override NoContentResult Handle()
+  {
+    return NoContent();
+  }
+}
diff --git a/tests/Ardalis.HttpClientTestExtensions.Api/Endpoints/MethodNotAllowedEndpoints/NoPost.cs b/tests/Ardalis.HttpClientTestExtensions.Api/Endpoints/MethodNotAllowedEndpoints/NoPost.cs
new file mode 100644
index 0000000..5c8b886
--- /dev/null
+++ b/tests/Ardalis.HttpClientTestExtensions.Api/Endpoints/MethodNotAllowedEndpoints/NoPost.cs
@@ -0,0 +1,17 @@
+using Ardalis.ApiEndpoints;
+using Microsoft.AspNetCore.Mvc;
+
+namespace Ardalis.HttpClientTestExtensions.Api.Endpoints.ErrorEndpoints;
+
+public class NoPost : EndpointBaseSync
+  .WithoutRequest
+  .WithResult<NoContentResult>
+    
+{
+  [Route("/nopost")]
+  [AcceptVerbs("DELETE", "PUT", "GET")]
+  public override NoContentResult Handle()
+  {
+    return NoContent();
+  }
+}
diff --git a/tests/Ardalis.HttpClientTestExtensions.Api/Endpoints/MethodNotAllowedEndpoints/NoPut.cs b/tests/Ardalis.HttpClientTestExtensions.Api/Endpoints/MethodNotAllowedEndpoints/NoPut.cs
new file mode 100644
index 0000000..e52635f
--- /dev/null
+++ b/tests/Ardalis.HttpClientTestExtensions.Api/Endpoints/MethodNotAllowedEndpoints/NoPut.cs
@@ -0,0 +1,18 @@
+using Ardalis.ApiEndpoints;
+using Microsoft.AspNetCore.Mvc;
+
+namespace Ardalis.HttpClientTestExtensions.Api.Endpoints.ErrorEndpoints;
+
+public class NoPut : EndpointBaseSync
+  .WithoutRequest
+  .WithResult<NoContentResult>
+    
+{
+  [Route("/noput")]
+  [AcceptVerbs("DELETE", "GET", "POST")]
+  public override NoContentResult Handle()
+  {
+    return NoContent();
+  }
+
+}
diff --git a/tests/Ardalis.HttpClientTestExtensions.Tests/HttpClientDeleteExtensionMethodsTests.cs b/tests/Ardalis.HttpClientTestExtensions.Tests/HttpClientDeleteExtensionMethodsTests.cs
index dd9cbdf..a5c4293 100644
--- a/tests/Ardalis.HttpClientTestExtensions.Tests/HttpClientDeleteExtensionMethodsTests.cs
+++ b/tests/Ardalis.HttpClientTestExtensions.Tests/HttpClientDeleteExtensionMethodsTests.cs
@@ -89,4 +89,12 @@ public async Task DeleteAndRedirectAsync()
     var client = _factory.CreateClient(new WebApplicationFactoryClientOptions() { AllowAutoRedirect = false });
     _ = await client.DeleteAndRedirectAsync("/redirect", "/redirected", _outputHelper);
   }
+
+  [Fact]
+  public async Task DeleteAndEnsureMethodNotAllowedAsync()
+  {
+    var client = _factory.CreateClient(new WebApplicationFactoryClientOptions() { AllowAutoRedirect = false });
+    _ = await client.DeleteAndEnsureMethodNotAllowedAsync("/nodelete", _outputHelper);
+  }
+
 }
diff --git a/tests/Ardalis.HttpClientTestExtensions.Tests/HttpClientGetExtensionMethodsTests.cs b/tests/Ardalis.HttpClientTestExtensions.Tests/HttpClientGetExtensionMethodsTests.cs
index 9081be0..a8ca622 100644
--- a/tests/Ardalis.HttpClientTestExtensions.Tests/HttpClientGetExtensionMethodsTests.cs
+++ b/tests/Ardalis.HttpClientTestExtensions.Tests/HttpClientGetExtensionMethodsTests.cs
@@ -82,6 +82,12 @@ public async Task GetAndEnsureBadRequestAsync()
     _ = await _client.GetAndEnsureBadRequestAsync("/badrequest", _outputHelper);
   }
 
+  [Fact]
+  public async Task GetAndEnsureMethodNotAllowedAsync()
+  {
+    _ = await _client.GetAndEnsureMethodNotAllowedAsync("/noget", _outputHelper);
+  }
+  
   [Fact]
   public async Task GetAndRedirectAsync()
   {
diff --git a/tests/Ardalis.HttpClientTestExtensions.Tests/HttpClientPostExtensionMethodsTests.cs b/tests/Ardalis.HttpClientTestExtensions.Tests/HttpClientPostExtensionMethodsTests.cs
index 8c71e03..a5ebf0f 100644
--- a/tests/Ardalis.HttpClientTestExtensions.Tests/HttpClientPostExtensionMethodsTests.cs
+++ b/tests/Ardalis.HttpClientTestExtensions.Tests/HttpClientPostExtensionMethodsTests.cs
@@ -86,4 +86,12 @@ public async Task PostAndRedirectAsync()
     var client = _factory.CreateClient(new WebApplicationFactoryClientOptions() { AllowAutoRedirect = false });
     _ = await client.PostAndRedirectAsync("/redirect", content, "/redirected", _outputHelper);
   }
+
+  [Fact]
+  public async Task PostAndEnsureMethodNotAllowedAsync()
+  {
+    var dto = new CountryDto { Id = "ESP", Name = "Spain" };
+    var content = new StringContent(JsonSerializer.Serialize(dto), Encoding.UTF8, "application/json");
+    _ = await _client.PostAndEnsureMethodNotAllowedAsync("/nopost", content, _outputHelper);
+  }
 }
diff --git a/tests/Ardalis.HttpClientTestExtensions.Tests/HttpClientPutExtensionMethodsTests.cs b/tests/Ardalis.HttpClientTestExtensions.Tests/HttpClientPutExtensionMethodsTests.cs
index 6386da0..061a615 100644
--- a/tests/Ardalis.HttpClientTestExtensions.Tests/HttpClientPutExtensionMethodsTests.cs
+++ b/tests/Ardalis.HttpClientTestExtensions.Tests/HttpClientPutExtensionMethodsTests.cs
@@ -76,6 +76,14 @@ public async Task PutAndEnsureBadRequestAsync()
     _ = await _client.PutAndEnsureBadRequestAsync("/badrequest", content, _outputHelper);
   }
 
+  [Fact]
+  public async Task PutAndEnsureMethodNotAllowedAsync()
+  {
+    var dto = new CountryDto { Id = SeedData.TestCountry1.Id, Name = "'Merica" };
+    var content = new StringContent(JsonSerializer.Serialize(dto), Encoding.UTF8, "application/json");
+    _ = await _client.PutAndEnsureMethodNotAllowedAsync("/noput", content, _outputHelper);
+  }
+
   [Fact]
   public async Task PutAndRedirectAsync()
   {