diff --git a/Lib/test/test_os.py b/Lib/test/test_os.py
index fae159d..ee6027b 100644
--- a/Lib/test/test_os.py
+++ b/Lib/test/test_os.py
@@ -918,6 +918,7 @@
         MakedirTests,
         DevNullTests,
         URandomTests,
+        URandomFDTests,
         ExecvpeTests,
         Win32ErrorTests,
         TestInvalidFD,