diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index df000cda5..4f270ea55 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -21,7 +21,9 @@ jobs:
         run: |
           python -m pip install --upgrade pip setuptools six wheel
           python -m pip install mypy pytest-cov -r requirements.txt
-      - run: mypy --ignore-missing-imports --install-types --non-interactive .
+      - run: |
+          mkdir -p .mypy_cache
+          mypy --ignore-missing-imports --install-types --non-interactive .
       - name: Run tests
         run: pytest --doctest-modules --ignore=project_euler/ --ignore=scripts/validate_solutions.py --cov-report=term-missing:skip-covered --cov=. .
       - if: ${{ success() }}
diff --git a/DIRECTORY.md b/DIRECTORY.md
index 16244e6ad..550920c0f 100644
--- a/DIRECTORY.md
+++ b/DIRECTORY.md
@@ -114,6 +114,7 @@
   * [Harris Corner](https://github.com/TheAlgorithms/Python/blob/master/computer_vision/harris_corner.py)
   * [Mean Threshold](https://github.com/TheAlgorithms/Python/blob/master/computer_vision/mean_threshold.py)
   * [Mosaic Augmentation](https://github.com/TheAlgorithms/Python/blob/master/computer_vision/mosaic_augmentation.py)
+  * [Pooling Functions](https://github.com/TheAlgorithms/Python/blob/master/computer_vision/pooling_functions.py)
 
 ## Conversions
   * [Binary To Decimal](https://github.com/TheAlgorithms/Python/blob/master/conversions/binary_to_decimal.py)