diff --git a/.github/workflows/validation.yml b/.github/workflows/validation.yml
index 374367e..57225a7 100644
--- a/.github/workflows/validation.yml
+++ b/.github/workflows/validation.yml
@@ -22,7 +22,8 @@ jobs:
     - name: Install Dependencies
       run: |
         python -m pip install --upgrade pip
-        python -m pip install flake8 pytest
+        poetry --version
+        poetry install --dev
     - name: Check Formatting
       run: |
         black --check src tests