diff --git a/tasks/renpython.py b/tasks/renpython.py
index e5a2058e..25e8cdd5 100644
--- a/tasks/renpython.py
+++ b/tasks/renpython.py
@@ -612,6 +612,7 @@ def link_web(c: Context):
     -sASYNCIFY_ONLY="{{ asyncify_only }}"
     -sINITIAL_MEMORY=192MB
     -sALLOW_MEMORY_GROWTH=1
+    -sSTACK_SIZE=128KB
 
     -sEXPORTED_FUNCTIONS=['_main']