diff --git a/target_postgres/tests/test_types.py b/target_postgres/tests/test_types.py
index 428fc8f..d7cf211 100644
--- a/target_postgres/tests/test_types.py
+++ b/target_postgres/tests/test_types.py
@@ -56,6 +56,7 @@ def test_datetime_string(self, to_postgres: JSONSchemaToPostgres):
         ("jsonschema", "expected"),
         [
             pytest.param({"type": "integer"}, BIGINT, id="default"),
+            pytest.param({"type": ["integer", "null"]}, BIGINT, id="default-nullable"),
             pytest.param(
                 {"type": "integer", "maximum": 2**15 - 1},
                 SMALLINT,