diff --git a/python-aiohttp.changes b/python-aiohttp.changes
index 75e6ad2..dcf0885 100644
--- a/python-aiohttp.changes
+++ b/python-aiohttp.changes
@@ -1,3 +1,10 @@
+-------------------------------------------------------------------
+Mon Jul 28 08:16:17 UTC 2025 - Nico Krapp <nico.krapp@suse.com>
+
+- Add remove-zlib-ng-test-dep.patch to remove python-zlib-ng test
+  dependency
+- enable test_leaks again, works with limited threads
+
 -------------------------------------------------------------------
 Mon Jul 14 15:17:06 UTC 2025 - Dirk Müller <dmueller@suse.com>
 
diff --git a/python-aiohttp.spec b/python-aiohttp.spec
index 888d677..f749eaf 100644
--- a/python-aiohttp.spec
+++ b/python-aiohttp.spec
@@ -29,6 +29,8 @@ Patch0:         test_no_warnings_fix.patch
 # PATCH-FIX-OPENSUSE remove-isal-test-dep.patch -- daniel.garcia@suse.com
 # Remove python-isal dependency for testing.
 Patch1:         remove-isal-test-dep.patch
+# PATCH-FIX-OPENSUSE remove-zlib-ng-test-dep.patch
+Patch2:         remove-zlib-ng-test-dep.patch
 Requires:       python-aiohappyeyeballs >= 2.5.0
 Requires:       python-aiosignal >= 1.4
 Requires:       python-attrs >= 17.3.0
@@ -73,7 +75,6 @@ BuildRequires:  %{python_module pytest-xdist}
 BuildRequires:  %{python_module re-assert}
 BuildRequires:  %{python_module time-machine}
 BuildRequires:  %{python_module trustme}
-BuildRequires:  %{python_module zlib-ng}
 # /SECTION
 # SECTION docs
 %if %{with docs}
@@ -141,8 +142,6 @@ rm -v tests/autobahn/test_autobahn.py
 rm -v tests/test_proxy_functional.py
 # Requires python-pytest-codspeed
 rm -v tests/test_benchmarks_*
-# some tests from here hang with pycares 4.9 https://github.com/aio-libs/aiohttp/issues/11244
-rm -v tests/test_leaks.py
 
 # randomly fails on xdist splits
 single_runs="(test_run_app or test_web_runner)"
diff --git a/remove-zlib-ng-test-dep.patch b/remove-zlib-ng-test-dep.patch
new file mode 100644
index 0000000..1a0e1a3
--- /dev/null
+++ b/remove-zlib-ng-test-dep.patch
@@ -0,0 +1,30 @@
+Index: aiohttp-3.12.14/requirements/test.in
+===================================================================
+--- aiohttp-3.12.14.orig/requirements/test.in
++++ aiohttp-3.12.14/requirements/test.in
+@@ -17,4 +17,3 @@ re-assert
+ setuptools-git
+ trustme; platform_machine != "i686"  # no 32-bit wheels
+ wait-for-it
+-zlib_ng
+Index: aiohttp-3.12.14/tests/conftest.py
+===================================================================
+--- aiohttp-3.12.14.orig/tests/conftest.py
++++ aiohttp-3.12.14/tests/conftest.py
+@@ -13,7 +13,6 @@ from unittest import mock
+ from uuid import uuid4
+ 
+ import pytest
+-import zlib_ng.zlib_ng
+ from blockbuster import blockbuster_ctx
+ 
+ from aiohttp import payload
+@@ -330,7 +329,7 @@ def unused_port_socket() -> Generator[so
+         s.close()
+ 
+ 
+-@pytest.fixture(params=[zlib, zlib_ng.zlib_ng])
++@pytest.fixture(params=[zlib])
+ def parametrize_zlib_backend(
+     request: pytest.FixtureRequest,
+ ) -> Generator[None, None, None]: