diff --git a/.github/workflows/pr-tests.yml b/.github/workflows/pr-tests.yml
index a19acc2..e7efe32 100644
--- a/.github/workflows/pr-tests.yml
+++ b/.github/workflows/pr-tests.yml
@@ -10,18 +10,22 @@ jobs:
     uses: nathandines/calibre-template-functions/.github/workflows/run_in_pyenv.yml@main
     with:
       run_command: poetry run mypy .
+      cached: true
   linter-ruff:
     needs: [python-deps]
     uses: nathandines/calibre-template-functions/.github/workflows/run_in_pyenv.yml@main
     with:
       run_command: poetry run ruff check --output-format=github .
+      cached: true
   formatter-ruff:
     needs: [python-deps]
     uses: nathandines/calibre-template-functions/.github/workflows/run_in_pyenv.yml@main
     with:
       run_command: poetry run ruff format --check .
+      cached: true
   tests-pytest:
     needs: [python-deps]
     uses: nathandines/calibre-template-functions/.github/workflows/run_in_pyenv.yml@main
     with:
       run_command: poetry run pytest -v --cov=. .
+      cached: true
diff --git a/.github/workflows/run_in_pyenv.yml b/.github/workflows/run_in_pyenv.yml
index 7625e9a..e617e76 100644
--- a/.github/workflows/run_in_pyenv.yml
+++ b/.github/workflows/run_in_pyenv.yml
@@ -6,17 +6,24 @@ on:
         required: false
         description: Command to run in pyenv
         type: string
+      cached:
+        required: false
+        default: false
+        description: Whether to rely on cached dependencies (i.e. don't run Poetry)
+        type: boolean
 
 jobs:
   pyenv-workflow:
     runs-on: ubuntu-22.04
     steps:
       - uses: actions/checkout@v4
-      - run: pipx install poetry
+      - if: ${{ ! inputs.cached }}
+        run: pipx install poetry
       - uses: actions/setup-python@v5
         with:
           python-version-file: .python-version
           cache: poetry
-      - run: poetry install
+      - if: ${{ ! inputs.cached }}
+        run: poetry install
       - if: ${{ inputs.run_command != '' }}
         run: ${{ inputs.run_command }}