diff --git a/run_tests.sh b/run_tests.sh
index 02175d5..e86df3c 100755
--- a/run_tests.sh
+++ b/run_tests.sh
@@ -3,5 +3,5 @@ set -e
 
 echo python3 --version
 pip3 install -r requirements.txt
-python3 -m mypy .
+python3 -m mypy cli.py interpreter.py grammar.py
 python3 tests.py