diff --git a/google/oauth2/challenges.py b/google/oauth2/challenges.py
index 6468498bc..59a2f9be4 100644
--- a/google/oauth2/challenges.py
+++ b/google/oauth2/challenges.py
@@ -225,7 +225,7 @@ def _obtain_challenge_input_webauthn(self, metadata, webauthn_handler):
             challenge=self._unpadded_urlsafe_b64recode(challenge),
             timeout_ms=WEBAUTHN_TIMEOUT_MS,
             allow_credentials=allow_credentials,
-            user_verification="required",
+            user_verification="preferred",
             extensions=extension,
         )