diff --git a/pyproject.toml b/pyproject.toml
index 3d21aff..c2abf4f 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -121,7 +121,6 @@ max-complexity = 15
 keep-runtime-typing = true
 
 [tool.mypy]
-exclude = ["setup.py"]
 # error whenever it encounters a function definition without type annotations
 #disallow_untyped_defs = true
 # error whenever a function with type annotations calls a function defined without annotations
diff --git a/tests-requirements.txt b/tests-requirements.txt
index 782ba82..146def4 100644
--- a/tests-requirements.txt
+++ b/tests-requirements.txt
@@ -16,6 +16,7 @@ tox
 tox-uv
 treq
 types-docker
+types-setuptools
 uv
 virtualenv
 wheel
\ No newline at end of file