diff --git a/src/cowboy_http2.erl b/src/cowboy_http2.erl
index 7f5d7389..82f4d2e4 100644
--- a/src/cowboy_http2.erl
+++ b/src/cowboy_http2.erl
@@ -24,6 +24,7 @@
 
 -type opts() :: #{
 	connection_type => worker | supervisor,
+	enable_connect_protocol => boolean(),
 	env => cowboy_middleware:env(),
 	inactivity_timeout => timeout(),
 	middlewares => [module()],