diff --git a/pyproject.toml b/pyproject.toml
index 68e74c7e05..45d02ca2b6 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -59,6 +59,7 @@ default = [
 ]
 curl-cffi = [
     "curl-cffi>=0.5.10,!=0.6.*,!=0.7.*,!=0.8.*,!=0.9.*,<0.17 ; implementation_name == 'cpython'",
+    "typing-extensions ; python_full_version < '3.11'",
 ]
 secretstorage = [
     "secretstorage",