diff --git a/quic/core/quic_flags_list.h b/quic/core/quic_flags_list.h
index fe88bb8..081c822 100644
--- a/quic/core/quic_flags_list.h
+++ b/quic/core/quic_flags_list.h
@@ -30,7 +30,7 @@
 // If true, allow client to enable BBRv2 on server via connection option \'B2ON\'.
 QUIC_FLAG(FLAGS_quic_reloadable_flag_quic_allow_client_enabled_bbr_v2, false)
 // If true, allow ticket open to be ignored in TlsServerHandshaker. Also fixes TlsServerHandshaker::ResumptionAttempted when handshake hints is used.
-QUIC_FLAG(FLAGS_quic_reloadable_flag_quic_tls_allow_ignore_ticket_open, false)
+QUIC_FLAG(FLAGS_quic_reloadable_flag_quic_tls_allow_ignore_ticket_open, true)
 // If true, close read side but not write side in QuicSpdyStream::OnStreamReset().
 QUIC_FLAG(FLAGS_quic_reloadable_flag_quic_fix_on_stream_reset, true)
 // If true, default on PTO which unifies TLP + RTO loss recovery.