diff --git a/quic/core/quic_flags_list.h b/quic/core/quic_flags_list.h
index 631c38f..60583e0 100644
--- a/quic/core/quic_flags_list.h
+++ b/quic/core/quic_flags_list.h
@@ -38,7 +38,7 @@
 // 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, avoid calling reloadable flags in QuicVersionManager constructor by lazily initializing internal state.
-QUIC_FLAG(FLAGS_quic_restart_flag_quic_lazy_quic_version_manager, false)
+QUIC_FLAG(FLAGS_quic_restart_flag_quic_lazy_quic_version_manager, true)
 // If true, clear undecryptable packets on handshake complete.
 QUIC_FLAG(FLAGS_quic_reloadable_flag_quic_clear_undecryptable_packets_on_handshake_complete, true)
 // If true, close read side but not write side in QuicSpdyStream::OnStreamReset().