diff --git a/tests/norun/test_registry.py b/tests/norun/test_registry.py
index 7dcd43e3..54626179 100644
--- a/tests/norun/test_registry.py
+++ b/tests/norun/test_registry.py
@@ -121,8 +121,10 @@ def test_registry(registry, dind):
         os.environ["DOCKER_TLS_VERIFY"] = "1"
         r2d.start()
 
-        proc = subprocess.run(["docker", "manifest", "inspect", "--insecure", image_name])
+        proc = subprocess.run(
+            ["docker", "manifest", "inspect", "--insecure", image_name]
+        )
         assert proc.returncode == 0
     finally:
         os.environ.clear()
-        os.environ.update(old_environ)
\ No newline at end of file
+        os.environ.update(old_environ)
diff --git a/tests/unit/test_argumentvalidation.py b/tests/unit/test_argumentvalidation.py
index 466a7d7d..1439a653 100644
--- a/tests/unit/test_argumentvalidation.py
+++ b/tests/unit/test_argumentvalidation.py
@@ -212,7 +212,6 @@ def test_invalid_container_port_protocol_mapping_fail(temp_cwd):
     assert not validate_arguments(builddir, args_list, "Port specification")
 
 
-
 def test_docker_no_build_success(temp_cwd):
     """
     Test to check if r2d succeeds with --no-build argument with not being able to connect to docker daemon