diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 4b1ad48..86ab4f0 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -20,10 +20,24 @@ jobs:
             3.12
             3.13
             3.14
+      - name: Compute cache window
+        id: cache_window
+        run: |
+          week=$(date +%Y-W%U)
+          echo "week=$week" >> $GITHUB_OUTPUT
+          echo "Cache window: $week"
+      - name: Cache hatch envs
+        uses: actions/cache@v4
+        with:
+          path: ~/.local/share/hatch
+          key: hatch-${{ runner.os }}-${{ steps.cache_window.outputs.week }}-${{ hashFiles('pyproject.toml') }}
+          restore-keys: |
+            hatch-${{ runner.os }}-${{ steps.cache_window.outputs.week }}-
+            hatch-${{ runner.os }}-
       - name: Install
         run: pip install hatch pyright .[test]
       - name: Run tests
-        run: hatch test --all --cover
+        run: hatch test --all --cover --parallel
       - name: Run static checks
         run: hatch run test:pyright
       - name: Upload coverage reports to Coveralls
diff --git a/pyproject.toml b/pyproject.toml
index 4f8ce43..abe8fa3 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -47,7 +47,7 @@ version-file = "startle/_version.py"
 dependencies = [ "pytest", "pytest-cov", "pyright", "typing-extensions" ]
 
 [tool.hatch.envs.hatch-test]
-dependencies = [ "pytest", "pytest-cov", "pyright", "typing-extensions" ]
+dependencies = [ "pytest", "pytest-cov", "pytest-xdist", "pyright", "typing-extensions" ]
 args = ["-ra", "-q"]
 
 [[tool.hatch.envs.hatch-test.matrix]]