diff --git a/tests/frame/concat_test.py b/tests/frame/concat_test.py
index 0bdd1ea0bd..00beb2ebc1 100644
--- a/tests/frame/concat_test.py
+++ b/tests/frame/concat_test.py
@@ -129,7 +129,7 @@ def test_concat_diagonal_invalid(
         )
     )
     context: Any
-    if impl.is_polars() and POLARS_VERSION < (1, 1):  # pragma: no cover
+    if impl.is_polars() and POLARS_VERSION < (1, 18):  # pragma: no cover
         context = pytest.raises(
             NarwhalsError,
             match=re.compile(r"(int.+datetime)|(datetime.+int)", re.IGNORECASE),