1 files changed, 1 insertions, 1 deletions
diff --git a/tests/test_rust.py b/tests/test_rust.py
index 55d8b6b28c..67443b6280 100644
--- a/tests/test_rust.py
+++ b/tests/test_rust.py
@@ -6,6 +6,6 @@ from tests import unittest
 class RustTestCase(unittest.TestCase):
     """Basic tests to ensure that we can call into Rust code."""
 
-    def test_basic(self):
+    def test_basic(self) -> None:
         result = sum_as_string(1, 2)
         self.assertEqual("3", result)