diff --git a/Makefile b/Makefile
index 9a1a2d3..86b1b5f 100644
--- a/Makefile
+++ b/Makefile
@@ -50,6 +50,9 @@ format:
 types:
 	mypy --namespace-packages -p "conduit" --config-file setup.cfg
 
+types-tests:
+	mypy --namespace-packages -p "tests" --config-file setup.cfg
+
 lint:
 	flake8 conduit
 	isort conduit --diff