diff --git a/infer-web.py b/infer-web.py
index 47596d539..b8d52e771 100644
--- a/infer-web.py
+++ b/infer-web.py
@@ -1609,9 +1609,9 @@ def change_f0_method(f0method8):
                 gr.Markdown(traceback.format_exc())
 
     if config.iscolab:
-        app.queue(concurrency_count=511, max_size=1022).launch(share=True)
+        app.queue(max_size=1022).launch(share=True)
     else:
-        app.queue(concurrency_count=511, max_size=1022).launch(
+        app.queue(max_size=1022).launch(
             server_name="0.0.0.0",
             inbrowser=not config.noautoopen,
             server_port=config.listen_port,