diff --git a/CHANGES.md b/CHANGES.md
index fa8674fd..b03540a8 100644
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -1,5 +1,9 @@
 **Experimental**: This is a new format for release notes. The format and availability is subject to change.
 
+## 2021.5.7
+### New Features
+- Named Tunnels will automatically select the protocol to connect to Cloudflare's edge network.
+
 ## 2021.5.0
 
 ### New Features
diff --git a/cmd/cloudflared/tunnel/subcommands.go b/cmd/cloudflared/tunnel/subcommands.go
index 5ad36cb9..35794096 100644
--- a/cmd/cloudflared/tunnel/subcommands.go
+++ b/cmd/cloudflared/tunnel/subcommands.go
@@ -110,7 +110,7 @@ var (
 	}
 	selectProtocolFlag = altsrc.NewStringFlag(&cli.StringFlag{
 		Name:    "protocol",
-		Value:   "h2mux",
+		Value:   "auto",
 		Aliases: []string{"p"},
 		Usage:   fmt.Sprintf("Protocol implementation to connect with Cloudflare's edge network. %s", connection.AvailableProtocolFlagMessage),
 		EnvVars: []string{"TUNNEL_TRANSPORT_PROTOCOL"},