diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 0ab9bf0dad086061ec39d07afc1712b11364e904..0c14af897919d1868659701b051ba43b9fccbfec 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -31,4 +31,4 @@ lint-test-job:   # This job also runs in the test stage.
     - pip install -e .
     - flake8 --docstring-convention google term_frag_sel/ tests/
     - pylint term_frag_sel/ tests/
-    - mypy term_frag_sel/
+    - mypy term_frag_sel/ tests/
diff --git a/setup.py b/setup.py
index 3fe12debd8988acce22bf44e9f942c2051348894..469d7860fe839a60bd505a5719ae69f8be589ae3 100644
--- a/setup.py
+++ b/setup.py
@@ -1,6 +1,6 @@
 """Set up project."""
 from pathlib import Path
-from setuptools import setup, find_packages
+from setuptools import setup, find_packages  # type: ignore
 
 project_root_dir = Path(__file__).parent.resolve()
 with open(project_root_dir / "requirements.txt",
diff --git a/tests/test_frag.py b/tests/test_frag.py
index da2d5bb0be820bfb92250c6fa581da98956eec60..90c0f948440c5cdbc1cc7126b67a5ec825665a96 100644
--- a/tests/test_frag.py
+++ b/tests/test_frag.py
@@ -1,7 +1,7 @@
 """Test utils.py functions."""
-import pandas as pd
+import pandas as pd  # type: ignore
 import pytest
-from Bio import SeqIO
+from Bio import SeqIO  # type: ignore
 
 from term_frag_sel.fragmentation import fragmentation