diff --git a/Lib/test/test_os.py b/Lib/test/test_os.py
index 3dc96a3fcee1..31f2cc36e6a9 100644
--- a/Lib/test/test_os.py
+++ b/Lib/test/test_os.py
@@ -2567,6 +2567,7 @@ def test_main():
         MakedirTests,
         DevNullTests,
         URandomTests,
+        URandomFDTests,
         ExecTests,
         Win32ErrorTests,
         TestInvalidFD,