diff --git a/pyproject.toml b/pyproject.toml
index bd7de33..f3f8b70 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -35,7 +35,7 @@ commands =
 [testenv:typing]
 description = Run mypy.
 commands =
-    mypy src/kafkaaggregator tests setup.py
+    mypy --show-traceback src/kafkaaggregator tests setup.py
 
 [testenv:lint]
 description = Lint codebase by running pre-commit (Black, isort, Flake8).