diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index f2ee21f..ac4431c 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -59,6 +59,13 @@ jobs:
       - name: Prune pre-commit hooks
         if: steps.cache-pre-commit.outputs.cache-hit != 'true'
         run: poetry run pre-commit gc
+      - name: Cache mypy
+        id: cache-mypy
+        uses: actions/cache@704facf57e6136b1bc63b828d79edcd491f0ee84 # v3
+        with:
+          path: .mypy_cache
+          key: mypy-${{ runner.os }}-${{ steps.setup-python.outputs.python-version }}-${{ hashFiles('poetry.lock') }}-${{ github.sha }}
+          restore-keys: mypy-${{ runner.os }}-${{ steps.setup-python.outputs.python-version }}-${{ hashFiles('poetry.lock') }}-
       - name: Run gitlint
         run: poetry run pre-commit run --color=always --hook-stage manual gitlint-ci
       - name: Run pre-commit