diff --git a/.builds/debian.yml b/.builds/debian.yml
index 8fe062a..ca66a37 100644
--- a/.builds/debian.yml
+++ b/.builds/debian.yml
@@ -13,3 +13,5 @@ tasks:
       pipenv install
       pipenv install --dev
       pipenv run nosetests --with-coverage --cover-package=stegano
+  - typecheck: |
+      pipenv run python tools/run_mypy.py