diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index eaadace..90f7fb8 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -13,6 +13,7 @@ buiild job:
     - pip3 install --upgrade pip
     - pip3 install --upgrade setuptools
     - pip3 install Flask gunicorn pytest pytest-cov
+    - pip3 install pendulum
     - pytest tests --cov --cov-report term --cov-report html
 
 deploy job: