diff --git a/setup.py b/setup.py
index 250b25b1..79c7e506 100644
--- a/setup.py
+++ b/setup.py
@@ -14,7 +14,7 @@
     package_data={
         'eel': ['eel.js', 'py.typed'],
     },
-    install_requires=['bottle', 'bottle-websocket', 'future', 'pyparsing'],
+    install_requires=['bottle', 'bottle-websocket', 'future', 'pyparsing', 'typing_extensions'],
     extras_require={
         "jinja2": ['jinja2>=2.10']
     },