diff --git a/lib/webpacker/dev_server_proxy.rb b/lib/webpacker/dev_server_proxy.rb
index 04c3c1eee..67f548287 100644
--- a/lib/webpacker/dev_server_proxy.rb
+++ b/lib/webpacker/dev_server_proxy.rb
@@ -11,6 +11,7 @@ def rewrite_response(response)
   def perform_request(env)
     if env["PATH_INFO"].start_with?("/#{public_output_uri_path}") && Webpacker.dev_server.running?
       env["HTTP_HOST"] = env["HTTP_X_FORWARDED_HOST"] = env["HTTP_X_FORWARDED_SERVER"] = Webpacker.dev_server.host_with_port
+      env["HTTP_X_FORWARDED_PROTO"] = Webpacker.dev_server.protocol
       env["SCRIPT_NAME"] = ""
 
       super(env)