diff --git a/setup.py b/setup.py
index 1fa98df..7cc84fb 100644
--- a/setup.py
+++ b/setup.py
@@ -10,7 +10,7 @@ setup(
     python_requires='>=3.9',
     install_requires=[
         'pandas',
-        'pywebview',
+        'pywebview==4.0.2',
     ],
     author='louisnw',
     license='MIT',