diff --git a/.github/workflows/pre-commit-run.yml b/.github/workflows/pre-commit-run.yml
index 5916b94..ca2f7f6 100644
--- a/.github/workflows/pre-commit-run.yml
+++ b/.github/workflows/pre-commit-run.yml
@@ -41,4 +41,4 @@ jobs:
 
       - name: Run pre-commit on all files
         run: |-
-          pre-commit run --all-files
+          pre-commit run --all-files --show-diff-on-failure
diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index 88d2a39..9590939 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -14,7 +14,7 @@ repos:
         exclude: '\.wxf$'
 
   - repo: https://github.com/astral-sh/ruff-pre-commit
-    rev: v0.8.5
+    rev: v0.9.0
     hooks:
       - id: ruff
         args:
diff --git a/xiangqi_setup/__main__.py b/xiangqi_setup/__main__.py
index 384e52d..284ea70 100644
--- a/xiangqi_setup/__main__.py
+++ b/xiangqi_setup/__main__.py
@@ -206,7 +206,7 @@ def main():
         dest="width_centimeter",
         metavar="CENTIMETER",
         type=float,
-        help=("width of the output in centimeters" f" (default: {_DEFAULT_WIDTH_CM})"),
+        help=(f"width of the output in centimeters (default: {_DEFAULT_WIDTH_CM})"),
     )
     scaling_options.add_argument(
         "--dpi",
@@ -214,7 +214,7 @@ def main():
         metavar="FLOAT",
         type=float,
         default=_DEFAULT_RESOLUTION_DPI,
-        help=("resolution of the output in dots per inch" " (default: %(default)s)"),
+        help=("resolution of the output in dots per inch (default: %(default)s)"),
     )
     scaling_options.add_argument(
         "--scale-pieces",