diff --git a/tests_typing/test_http_request.mypy-testing b/tests_typing/test_http_request.mypy-testing
index 636e6895f..665db9088 100644
--- a/tests_typing/test_http_request.mypy-testing
+++ b/tests_typing/test_http_request.mypy-testing
@@ -1,3 +1,5 @@
+from typing import Any, Dict
+
 import pytest
 
 from scrapy import Request
@@ -33,6 +35,9 @@ def mypy_test_copy():
     req_copy = req.copy()
     reveal_type(req_copy)  # R: scrapy.http.request.Request
 
+
+@pytest.mark.mypy_testing
+def mypy_test_copy_subclass():
     req = MyRequest("data:,")
     reveal_type(req)  # R: __main__.MyRequest
     req_copy = req.copy()
@@ -45,13 +50,22 @@ def mypy_test_replace():
     reveal_type(req)  # R: scrapy.http.request.Request
     req_copy = req.replace(body=b"a")
     reveal_type(req_copy)  # R: scrapy.http.request.Request
+    kwargs: Dict[str, Any] = {}
+    req_copy2 = req.replace(body=b"a", **kwargs)
+    reveal_type(req_copy2)  # R: Any
 
+
+@pytest.mark.mypy_testing
+def mypy_test_replace_subclass():
     req = MyRequest("data:,")
     reveal_type(req)  # R: __main__.MyRequest
     req_copy = req.replace(body=b"a")
     reveal_type(req_copy)  # R: __main__.MyRequest
     req_copy2 = req.replace(body=b"a", cls=MyRequest2)
     reveal_type(req_copy2)  # R: __main__.MyRequest2
+    kwargs: Dict[str, Any] = {}
+    req_copy3 = req.replace(body=b"a", cls=MyRequest2, **kwargs)
+    reveal_type(req_copy3)  # R: __main__.MyRequest2
 
 
 @pytest.mark.mypy_testing
diff --git a/tests_typing/test_http_response.mypy-testing b/tests_typing/test_http_response.mypy-testing
index 2e58b4fbc..d58ac1027 100644
--- a/tests_typing/test_http_response.mypy-testing
+++ b/tests_typing/test_http_response.mypy-testing
@@ -1,3 +1,5 @@
+from typing import Any, Dict
+
 import pytest
 
 from scrapy.http import HtmlResponse, Response, TextResponse
@@ -24,6 +26,9 @@ def mypy_test_copy():
     resp_copy = resp.copy()
     reveal_type(resp_copy)  # R: scrapy.http.response.Response
 
+
+@pytest.mark.mypy_testing
+def mypy_test_copy_subclass():
     resp = HtmlResponse("data:,")
     reveal_type(resp)  # R: scrapy.http.response.html.HtmlResponse
     resp_copy = resp.copy()
@@ -36,10 +41,19 @@ def mypy_test_replace():
     reveal_type(resp)  # R: scrapy.http.response.Response
     resp_copy = resp.replace(body=b"a")
     reveal_type(resp_copy)  # R: scrapy.http.response.Response
+    kwargs: Dict[str, Any] = {}
+    resp_copy2 = resp.replace(body=b"a", **kwargs)
+    reveal_type(resp_copy2)  # R: Any
 
+
+@pytest.mark.mypy_testing
+def mypy_test_replace_subclass():
     resp = HtmlResponse("data:,")
     reveal_type(resp)  # R: scrapy.http.response.html.HtmlResponse
     resp_copy = resp.replace(body=b"a")
     reveal_type(resp_copy)  # R: scrapy.http.response.html.HtmlResponse
     resp_copy2 = resp.replace(body=b"a", cls=TextResponse)
     reveal_type(resp_copy2)  # R: scrapy.http.response.text.TextResponse
+    kwargs: Dict[str, Any] = {}
+    resp_copy3 = resp.replace(body=b"a", cls=TextResponse, **kwargs)
+    reveal_type(resp_copy3)  # R: scrapy.http.response.text.TextResponse