diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 5918315..b07fc3e 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -14,9 +14,11 @@ jobs:
     steps:
       - name: Checkout
         uses: actions/checkout@v4
-      - run: pwd
-      - run: ls -l $GITHUB_WORKSPACE
-      - run: python --version
+      - name: Hash poetry.lock
+        id: hash
+        run: |
+          echo "poetry_hash=$(md5sum poetry.lock | cut -c -32)" >> $GITHUB_OUTPUT
+      - run: echo "${{ steps.hash.outputs.poetry_hash }}"
       - run: poetry install --verbose
 
   # test2: