diff --git a/pyproject.toml b/pyproject.toml
index a47ecf74..1c0ea4ff 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -53,5 +53,6 @@ addopts = [
 [tool.mypy]
 check_untyped_defs = true
 disallow_incomplete_defs = true
+disallow_untyped_calls = true
 disallow_untyped_decorators = true
 disallow_untyped_defs = true