diff --git a/tasks/renpython.py b/tasks/renpython.py
index 2b7ce38..26c8bce 100644
--- a/tasks/renpython.py
+++ b/tasks/renpython.py
@@ -606,6 +606,7 @@ def link_web(c: Context):
     -sASYNCIFY_ONLY="{{ asyncify_only }}"
     -sINITIAL_MEMORY=192MB
     -sALLOW_MEMORY_GROWTH=1
+    -sTOTAL_STACK=1048576
 
     -sEXPORTED_FUNCTIONS=['_main']