diff --git a/.github/workflows/run-all-tests.yml b/.github/workflows/run-all-tests.yml
index 5b2d46c..564e3ae 100644
--- a/.github/workflows/run-all-tests.yml
+++ b/.github/workflows/run-all-tests.yml
@@ -43,7 +43,7 @@ jobs:
           pip install -e ".[tests, lxml]"
       - name: Test with pytest
         run: |
-          pytest tests --cov=fastkml --cov=tests --cov-fail-under=88 --cov-report=xml
+          pytest tests --cov=fastkml --cov=tests --cov-fail-under=95 --cov-report=xml
       - name: "Upload coverage to Codecov"
         if: ${{ matrix.python-version==3.11 }}
         uses: codecov/codecov-action@v4
diff --git a/pyproject.toml b/pyproject.toml
index f841b26..7f3c66a 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -77,6 +77,7 @@ lxml = [
     "lxml",
 ]
 tests = [
+    "hypothesis",
     "pytest",
     "pytest-cov",
 ]