diff --git a/tests/aws/services/stepfunctions/v2/mocking/test_base_scenarios.py b/tests/aws/services/stepfunctions/v2/mocking/test_base_scenarios.py
index e7a4736d79590..6267001f37700 100644
--- a/tests/aws/services/stepfunctions/v2/mocking/test_base_scenarios.py
+++ b/tests/aws/services/stepfunctions/v2/mocking/test_base_scenarios.py
@@ -2,6 +2,7 @@
 
 from localstack_snapshot.snapshots.transformer import JsonpathTransformer, RegexTransformer
 
+import localstack.testing.config
 from localstack import config
 from localstack.aws.api.lambda_ import Runtime
 from localstack.aws.api.stepfunctions import HistoryEventType
@@ -76,8 +77,11 @@ def test_lambda_invoke(
             }
             mock_config_file_path = mock_config_file(mock_config)
             monkeypatch.setattr(config, "SFN_MOCK_CONFIG", mock_config_file_path)
+            # Insert the test environment's region name into this mock ARN
+            # to maintain snapshot compatibility across multi-region tests.
+            test_region_name = localstack.testing.config.TEST_AWS_REGION_NAME
             template["States"]["step1"]["Resource"] = (
-                f"arn:aws:lambda:us-east-1:111111111111:function:{function_name}"
+                f"arn:aws:lambda:{test_region_name}:111111111111:function:{function_name}"
             )
             definition = json.dumps(template)
             create_and_record_mocked_execution(