diff --git a/quic/core/quic_version_manager.cc b/quic/core/quic_version_manager.cc
index b8f99bd..1d4dcca 100644
--- a/quic/core/quic_version_manager.cc
+++ b/quic/core/quic_version_manager.cc
@@ -15,14 +15,15 @@
 
 QuicVersionManager::QuicVersionManager(
     ParsedQuicVersionVector supported_versions)
-    : disable_version_draft_29_(
+    : enable_version_rfcv1_(GetQuicReloadableFlag(quic_enable_version_rfcv1)),
+      disable_version_draft_29_(
           GetQuicReloadableFlag(quic_disable_version_draft_29)),
       disable_version_t051_(GetQuicReloadableFlag(quic_disable_version_t051)),
       disable_version_q050_(GetQuicReloadableFlag(quic_disable_version_q050)),
       disable_version_q046_(GetQuicReloadableFlag(quic_disable_version_q046)),
       disable_version_q043_(GetQuicReloadableFlag(quic_disable_version_q043)),
       allowed_supported_versions_(std::move(supported_versions)) {
-  static_assert(SupportedVersions().size() == 5u,
+  static_assert(SupportedVersions().size() == 6u,
                 "Supported versions out of sync");
   RefilterSupportedVersions();
 }
@@ -46,9 +47,11 @@
 }
 
 void QuicVersionManager::MaybeRefilterSupportedVersions() {
-  static_assert(SupportedVersions().size() == 5u,
+  static_assert(SupportedVersions().size() == 6u,
                 "Supported versions out of sync");
-  if (disable_version_draft_29_ !=
+  if (enable_version_rfcv1_ !=
+          GetQuicReloadableFlag(quic_enable_version_rfcv1) ||
+      disable_version_draft_29_ !=
           GetQuicReloadableFlag(quic_disable_version_draft_29) ||
       disable_version_t051_ !=
           GetQuicReloadableFlag(quic_disable_version_t051) ||
@@ -58,6 +61,7 @@
           GetQuicReloadableFlag(quic_disable_version_q046) ||
       disable_version_q043_ !=
           GetQuicReloadableFlag(quic_disable_version_q043)) {
+    enable_version_rfcv1_ = GetQuicReloadableFlag(quic_enable_version_rfcv1);
     disable_version_draft_29_ =
         GetQuicReloadableFlag(quic_disable_version_draft_29);
     disable_version_t051_ = GetQuicReloadableFlag(quic_disable_version_t051);