diff --git a/run_mypy.py b/run_mypy.py
index 38ac67607..ac8954c88 100755
--- a/run_mypy.py
+++ b/run_mypy.py
@@ -41,6 +41,7 @@ modules = [
     'mesonbuild/modules/fs.py',
     'mesonbuild/modules/i18n.py',
     'mesonbuild/modules/java.py',
+    'mesonbuild/modules/keyval.py',
     'mesonbuild/modules/qt.py',
     'mesonbuild/modules/unstable_external_project.py',
     'mesonbuild/modules/unstable_rust.py',