diff --git a/end_to_end_tests/test_end_to_end.py b/end_to_end_tests/test_end_to_end.py
index 5502297ff..3f523cc32 100644
--- a/end_to_end_tests/test_end_to_end.py
+++ b/end_to_end_tests/test_end_to_end.py
@@ -266,7 +266,7 @@ def test_generate_dir_already_exists():
 
 
 def test_update_integration_tests():
-    url = "https://raw.githubusercontent.com/openapi-generators/openapi-test-server/main/openapi.json"
+    url = "https://raw.githubusercontent.com/openapi-generators/openapi-test-server/v0.0.1/openapi.json"
     source_path = Path(__file__).parent.parent / "integration-tests"
     temp_dir = Path.cwd() / "test_update_integration_tests"
     shutil.rmtree(temp_dir, ignore_errors=True)
diff --git a/pyproject.toml b/pyproject.toml
index 24a58cdec..73a78a277 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -129,7 +129,7 @@ composite = ["test --cov openapi_python_client tests --cov-report=term-missing"]
 
 [tool.pdm.scripts.regen_integration]
 shell = """
-openapi-python-client generate --overwrite --url https://raw.githubusercontent.com/openapi-generators/openapi-test-server/main/openapi.json --config integration-tests/config.yaml --meta pdm --output-path integration-tests \
+openapi-python-client generate --overwrite --url https://raw.githubusercontent.com/openapi-generators/openapi-test-server/v0.0.1/openapi.json --config integration-tests/config.yaml --meta pdm --output-path integration-tests \
 """
 
 [build-system]