diff --git a/.github/workflows/py-full-unittests.yml b/.github/workflows/py-full-unittests.yml
index 6908098e3..e3513ad0c 100644
--- a/.github/workflows/py-full-unittests.yml
+++ b/.github/workflows/py-full-unittests.yml
@@ -9,6 +9,11 @@ jobs:
   all_unit_tests:
     runs-on: single-cell-1tb-runner
     steps:
+      - name: Install OS dependencies
+        run: |
+          sudo apt update
+          sudo apt install -y build-essential git-all
+
       - uses: actions/checkout@v4
         with:
           fetch-depth: 0
@@ -17,11 +22,6 @@ jobs:
         with:
           python-version: 3.11
 
-      - name: Install OS dependencies
-        run: |
-          sudo apt update
-          sudo apt install -y build-essential git-all
-
       - name: debugging
         run: |
           pwd