diff --git a/CHANGELOG.md b/CHANGELOG.md
index eff4202b8..c43ab2b1c 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,6 +4,13 @@
 
 [1]: https://pypi.org/project/google-auth/#history
 
+## [2.40.1](https://github.com/googleapis/google-auth-library-python/compare/v2.40.0...v2.40.1) (2025-05-06)
+
+
+### Bug Fixes
+
+* Disable logging response body for async logs ([#1756](https://github.com/googleapis/google-auth-library-python/issues/1756)) ([2f0ddfe](https://github.com/googleapis/google-auth-library-python/commit/2f0ddfeb9f6c726c68beebd7eefd32c86f7f0963))
+
 ## [2.40.0](https://github.com/googleapis/google-auth-library-python/compare/v2.39.0...v2.40.0) (2025-04-29)
 
 
diff --git a/google/auth/aio/_helpers.py b/google/auth/aio/_helpers.py
index fd7d37a2f..1d5a4618c 100644
--- a/google/auth/aio/_helpers.py
+++ b/google/auth/aio/_helpers.py
@@ -53,5 +53,10 @@ async def response_log_async(logger: logging.Logger, response: Any) -> None:
         response: The HTTP response object to log.
     """
     if _helpers.is_logging_enabled(logger):
-        json_response = await _parse_response_async(response)
+        # TODO(https://github.com/googleapis/google-auth-library-python/issues/1755):
+        # Parsing the response for async streaming logging results in
+        # the stream to be empty downstream. For now, we will not be logging
+        # the response for async responses until we investigate further.
+        # json_response = await _parse_response_async(response)
+        json_response = None
         _helpers._response_log_base(logger, json_response)
diff --git a/google/auth/version.py b/google/auth/version.py
index d1363c1ef..ee0bb1260 100644
--- a/google/auth/version.py
+++ b/google/auth/version.py
@@ -12,4 +12,4 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-__version__ = "2.40.0"
+__version__ = "2.40.1"
diff --git a/system_tests/secrets.tar.enc b/system_tests/secrets.tar.enc
index fe6fb3aa0..8fa36e70b 100644
Binary files a/system_tests/secrets.tar.enc and b/system_tests/secrets.tar.enc differ
diff --git a/tests/aio/test__helpers.py b/tests/aio/test__helpers.py
index 7642431ca..829dc97ff 100644
--- a/tests/aio/test__helpers.py
+++ b/tests/aio/test__helpers.py
@@ -65,17 +65,13 @@ async def test_response_log_debug_disabled(logger, caplog, base_logger):
 
 @pytest.mark.asyncio
 async def test_response_log_debug_enabled_response_json(logger, caplog, base_logger):
-    class MockResponse:
-        async def json(self):
-            return {"key1": "value1", "key2": "value2", "key3": "value3"}
-
-    response = MockResponse()
+    response = None
     caplog.set_level(logging.DEBUG, logger=_MOCK_CHILD_LOGGER_NAME)
     await _helpers.response_log_async(logger, response)
     assert len(caplog.records) == 1
     record = caplog.records[0]
     assert record.message == "Response received..."
-    assert record.httpResponse == {"key1": "value1", "key2": "value2", "key3": "value3"}
+    assert record.httpResponse == "<class 'NoneType'>"
 
 
 @pytest.mark.asyncio