diff --git a/cmd/cloudflared/tunnel/configuration.go b/cmd/cloudflared/tunnel/configuration.go
index ce628168..69d272b0 100644
--- a/cmd/cloudflared/tunnel/configuration.go
+++ b/cmd/cloudflared/tunnel/configuration.go
@@ -46,7 +46,7 @@ var (
 	LogFieldHostname = "hostname"
 
 	secretFlags     = [2]*altsrc.StringFlag{credentialsContentsFlag, tunnelTokenFlag}
-	defaultFeatures = []string{supervisor.FeatureAllowRemoteConfig, supervisor.FeatureSerializedHeaders, supervisor.FeatureDatagramV2}
+	defaultFeatures = []string{supervisor.FeatureAllowRemoteConfig, supervisor.FeatureSerializedHeaders, supervisor.FeatureDatagramV2, supervisor.FeatureQUICSupportEOF}
 
 	configFlags = []string{"autoupdate-freq", "no-autoupdate", "retries", "protocol", "loglevel", "transport-loglevel", "origincert", "metrics", "metrics-update-freq", "edge-ip-version"}
 )
diff --git a/supervisor/tunnel.go b/supervisor/tunnel.go
index 95271ab4..e4a0a08a 100644
--- a/supervisor/tunnel.go
+++ b/supervisor/tunnel.go
@@ -37,6 +37,7 @@ const (
 	FeatureAllowRemoteConfig = "allow_remote_config"
 	FeatureDatagramV2        = "support_datagram_v2"
 	FeaturePostQuantum       = "postquantum"
+	FeatureQUICSupportEOF    = "support_quic_eof"
 )
 
 type TunnelConfig struct {