diff --git a/dev_tools/requirements/deps/runtime.txt b/dev_tools/requirements/deps/runtime.txt
index 2a542b4e7..4c0c8019a 100644
--- a/dev_tools/requirements/deps/runtime.txt
+++ b/dev_tools/requirements/deps/runtime.txt
@@ -32,4 +32,7 @@ qsharp-widgets
 # serialization
 protobuf
 
+# typing
+typing_extensions>=4.10.0
+
 # Note: use `pipreqs` to generate a list of dependencies based on the imports in our files.