diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index 2e5a66b..a2fea46 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -21,7 +21,7 @@ repos:
       - id: trailing-whitespace
 
   - repo: https://github.com/python-jsonschema/check-jsonschema
-    rev: 0.27.0
+    rev: 0.27.1
     hooks:
       - id: check-github-workflows
 
@@ -65,11 +65,15 @@ repos:
           ["jsonschema>=2.6", "traitlets>=5.13", "jupyter_core>5.4"]
 
   - repo: https://github.com/astral-sh/ruff-pre-commit
-    rev: v0.1.3
+    rev: v0.1.5
     hooks:
       - id: ruff
+        types_or: [python, jupyter]
+        exclude: "tests/.*.ipynb"
         args: ["--fix", "--show-fixes"]
       - id: ruff-format
+        exclude: "tests/.*.ipynb"
+        types_or: [python, jupyter]
 
   - repo: https://github.com/scientific-python/cookie
     rev: "2023.10.27"
diff --git a/pyproject.toml b/pyproject.toml
index 8c997fa..78ff794 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -87,7 +87,10 @@ nowarn = "test -W default {args}"
 detached = true
 dependencies = ["pre-commit"]
 [tool.hatch.envs.lint.scripts]
-build = "pre-commit run --all-files ruff"
+build = [
+  "pre-commit run --all-files ruff",
+  "pre-commit run --all-files ruff-format"
+]
 
 [tool.hatch.envs.typing]
 dependencies = [ "pre-commit"]
@@ -136,7 +139,6 @@ disable_error_code = ["no-untyped-def", "no-untyped-call"]
 warn_unreachable = true
 
 [tool.ruff]
-target-version = "py38"
 line-length = 100
 
 [tool.ruff.format]
diff --git a/tests/test4custom.ipynb b/tests/test4custom.ipynb
index 68a0da9..d5586d0 100644
--- a/tests/test4custom.ipynb
+++ b/tests/test4custom.ipynb
@@ -26,7 +26,7 @@
     "import IPython\n",
     "\n",
     "bundle = {}\n",
-    "bundle['application/vnd.raw.v1+json'] = {'apples': ['🍎', '🍏'], 'bananas': 2, 'oranges': 'apples'}\n",
+    "bundle[\"application/vnd.raw.v1+json\"] = {\"apples\": [\"🍎\", \"🍏\"], \"bananas\": 2, \"oranges\": \"apples\"}\n",
     "\n",
     "IPython.display.display(bundle, raw=True)"
    ]