diff --git a/.github/workflows/make-check.yml b/.github/workflows/make-check.yml
index f67e6fc..b59382e 100644
--- a/.github/workflows/make-check.yml
+++ b/.github/workflows/make-check.yml
@@ -21,9 +21,9 @@ jobs:
   check:
     runs-on: ubuntu-24.04
     strategy:
-      fail-fast: false
+      fail-fast: true
       matrix:
-        python-version: ["3.9", "3.10", "3.11", "3.12", "3.13"]
+        python-version: ["3.10", "3.11", "3.12", "3.13", "3.14"]
     steps:
       - uses: actions/checkout@v4
       - name: Set up Python ${{ matrix.python-version }}
@@ -36,9 +36,15 @@ jobs:
           python -m pip install uv
           sudo apt-get install npm
           npm install --global prettier
+      - name: Set python version file for uv
+        run: |
+          echo "${{ matrix.python-version }}" > .python-version
       - name: Run make check
         run: |
           make check
+      - name: Reset python version file
+        run: |
+          git restore .python-version
       - name: See if there are changes
         run: |
           git diff --exit-code
diff --git a/.python-version b/.python-version
index 24ee5b1..6324d40 100644
--- a/.python-version
+++ b/.python-version
@@ -1 +1 @@
-3.13
+3.14
diff --git a/Makefile b/Makefile
index 04ac477..195a0de 100644
--- a/Makefile
+++ b/Makefile
@@ -7,11 +7,11 @@ venv:
 	uv sync
 
 format: venv
-	uv tool run black .
+	uv tool run black . --target-version py310
 	prettier . --write
 
 lint: venv
-	uv tool run black --check .
+	uv tool run black --check . --fast
 	uv tool run flake8 src/ --ignore=E203,W503,E722,E731 --max-complexity=100 --max-line-length=160
 	uv tool run pyflakes src/
 	uv tool run pyright src/
diff --git a/src/cfengine_cli/lint.py b/src/cfengine_cli/lint.py
index d293519..2f9559b 100644
--- a/src/cfengine_cli/lint.py
+++ b/src/cfengine_cli/lint.py
@@ -537,7 +537,7 @@ def _lint_node(node: Node, policy_file: PolicyFile, state: State) -> int:
     ):
         _highlight_range(node, lines)
         print(
-            f"Error: {"Bundle" if "bundle" in node.type else "Body"} '{_text(node)}' conflicts with built-in function with the same name {location}"
+            f"Error: {'Bundle' if 'bundle' in node.type else 'Body'} '{_text(node)}' conflicts with built-in function with the same name {location}"
         )
         return 1
     if node.type == "calling_identifier":