diff --git a/.github/workflows/manual_tests.yml b/.github/workflows/manual_tests.yml
index a56b41f..297831b 100644
--- a/.github/workflows/manual_tests.yml
+++ b/.github/workflows/manual_tests.yml
@@ -65,11 +65,11 @@ jobs:
       - name: Install pdm
         run: pip install pdm
       - name: Generate lock with oldest dependencies
-        run: pdm lock --lockfile pdm.oldest.lock --strategy no_cross_platform,direct_minimal_versions -G cli -dG test
-      - name: Install quackosm and tests dependencies
         run: |
           echo "fiona==1.9.6" >> fiona_constraint.txt
-          pdm install --override fiona_constraint.txt --lockfile pdm.oldest.lock -G cli -dG test --skip=post_install
+          pdm lock --override fiona_constraint.txt --lockfile pdm.oldest.lock --strategy no_cross_platform,direct_minimal_versions -G cli -dG test
+      - name: Install quackosm and tests dependencies
+        run: pdm install --lockfile pdm.oldest.lock -G cli -dG test --skip=post_install
       - name: Run tests with pytest
         run: |
           pdm run pytest -v -s --durations=20 tests/base