diff --git a/Formula/openresty-debug.rb b/Formula/openresty-debug.rb
index 720d582..6113cc3 100644
--- a/Formula/openresty-debug.rb
+++ b/Formula/openresty-debug.rb
@@ -45,6 +45,7 @@ def install
       --with-ipv6
       --with-stream
       --with-stream_ssl_module
+      --with-stream_ssl_preread_module
       --with-http_v2_module
       --without-mail_pop3_module
       --without-mail_imap_module