diff --git a/quic/core/quic_flags_list.h b/quic/core/quic_flags_list.h
index 0fe1980..5bb98cc 100644
--- a/quic/core/quic_flags_list.h
+++ b/quic/core/quic_flags_list.h
@@ -84,7 +84,7 @@
 // If true, require handshake confirmation for QUIC connections, functionally disabling 0-rtt handshakes.
 QUIC_FLAG(FLAGS_quic_reloadable_flag_quic_require_handshake_confirmation, false)
 // If true, server proactively retires client issued connection ID on reverse path validation failure. 
-QUIC_FLAG(FLAGS_quic_reloadable_flag_quic_retire_cid_on_reverse_path_validation_failure, false)
+QUIC_FLAG(FLAGS_quic_reloadable_flag_quic_retire_cid_on_reverse_path_validation_failure, true)
 // If true, set burst token to 2 in cwnd bootstrapping experiment.
 QUIC_FLAG(FLAGS_quic_reloadable_flag_quic_conservative_bursts, false)
 // If true, stop resetting ideal_next_packet_send_time_ in pacing sender.