diff --git a/.github/workflows/CI.yml b/.github/workflows/CI.yml
index aad5a7f..64adf36 100644
--- a/.github/workflows/CI.yml
+++ b/.github/workflows/CI.yml
@@ -33,7 +33,7 @@ jobs:
       - name: Install dependencies
         run: |
           python3 -m pip install --upgrade pip
-          pip3 install pytest black
+          pip3 install pytest black pip-tools
           VERSION="0.0.$(date +%s)"
           sed -i "s/{{VERSION_PLACEHOLDER}}/$VERSION/" corkit/__init__.py
           pip install --no-build-isolation -e .