diff --git a/.github/workflows/validation.yml b/.github/workflows/validation.yml
index ba2d683..1a6ba96 100644
--- a/.github/workflows/validation.yml
+++ b/.github/workflows/validation.yml
@@ -25,6 +25,7 @@ jobs:
       - name: Install dependencies
         run: |
           python -m pip install --upgrade pip
+          pip install .
           pip install ruff mypy
 
       - name: Run Ruff linter