diff --git a/.github/workflows/push_master.yml b/.github/workflows/push_master.yml
index 22a7da7..2e22f5e 100644
--- a/.github/workflows/push_master.yml
+++ b/.github/workflows/push_master.yml
@@ -26,6 +26,7 @@ jobs:
     - name: Install dependencies
       run: |
         python -m pip install --upgrade pip
+        pip install prometheus_client
         pip install pylint
     - name: Analysing the code with pylint
       run: pylint --exit-zero $(git ls-files '*.py')