diff --git a/.github/workflows/formatting.yml b/.github/workflows/formatting.yml
index f7548d9..05c57df 100644
--- a/.github/workflows/formatting.yml
+++ b/.github/workflows/formatting.yml
@@ -21,12 +21,16 @@ jobs:
         run: |
           python -m pip install --upgrade pip
           pip install ruff
+          pip install isort
       
       - name: Lint with ruff
         run: ruff check --fix *.py
       
       - name: Format with ruff
         run: ruff format *.py
+
+      - name: isort packages for python files
+        run: isort models.py otypes.py utils.py
       
       - name: Remove ruff cache
         run: rm -rf .ruff_cache