Increase grace time
diff --git a/test/core/end2end/tests/max_connection_idle.c b/test/core/end2end/tests/max_connection_idle.c
index 9dc1ee4..c0984e4 100644
--- a/test/core/end2end/tests/max_connection_idle.c
+++ b/test/core/end2end/tests/max_connection_idle.c
@@ -89,8 +89,8 @@
/* wait for the channel to reach its maximum idle time */
grpc_channel_watch_connectivity_state(
f.client, GRPC_CHANNEL_READY,
- grpc_timeout_milliseconds_to_deadline(MAX_CONNECTION_IDLE_MS + 500), f.cq,
- tag(99));
+ grpc_timeout_milliseconds_to_deadline(MAX_CONNECTION_IDLE_MS + 3000),
+ f.cq, tag(99));
CQ_EXPECT_COMPLETION(cqv, tag(99), 1);
cq_verify(cqv);
state = grpc_channel_check_connectivity_state(f.client, 0);