diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index e78760d4df..14304ce6b7 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -50,7 +50,7 @@ repos:
         files: "^notebook"
         stages: [manual]
         args: ["--install-types", "--non-interactive"]
-        additional_dependencies: ["traitlets>=5.13", "tornado", "jupyter_server>=2.9", "jupyterlab_server>=2.25", "jupyterlab>=4.0"]
+        additional_dependencies: ["traitlets>=5.13", "tornado", "jupyter_server>=2.10", "jupyterlab_server>=2.25", "jupyterlab>=4.0"]
 
   - repo: https://github.com/pre-commit/pygrep-hooks
     rev: 'v1.10.0'
@@ -60,11 +60,13 @@ repos:
       - id: rst-inline-touching-normal
 
   - repo: https://github.com/astral-sh/ruff-pre-commit
-    rev: v0.1.4
+    rev: v0.1.5
     hooks:
       - id: ruff
+        types_or: [ python, jupyter ]
         args: ['--fix', '--show-fixes']
       - id: ruff-format
+        types_or: [ python, jupyter ]
 
   - repo: https://github.com/scientific-python/cookie
     rev: '2023.10.27'
diff --git a/notebook/app.py b/notebook/app.py
index 53cc86e65b..dffa397946 100644
--- a/notebook/app.py
+++ b/notebook/app.py
@@ -301,6 +301,8 @@ def _prepare_templates(self) -> None:
 
     def server_extension_is_enabled(self, extension: str) -> bool:
         """Check if server extension is enabled."""
+        if self.serverapp is None:
+            return False
         try:
             extension_enabled = (
                 self.serverapp.extension_manager.extensions[extension].enabled is True
@@ -311,6 +313,7 @@ def server_extension_is_enabled(self, extension: str) -> bool:
 
     def initialize_handlers(self) -> None:
         """Initialize handlers."""
+        assert self.serverapp is not None  # noqa: S101
         page_config = self.serverapp.web_app.settings.setdefault("page_config_data", {})
         nbclassic_enabled = self.server_extension_is_enabled("nbclassic")
         page_config["nbclassic_enabled"] = nbclassic_enabled
diff --git a/pyproject.toml b/pyproject.toml
index 3df1cba221..1c67251b93 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -138,7 +138,10 @@ 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"]
@@ -233,7 +236,6 @@ enable_error_code = ["ignore-without-code", "redundant-expr", "truthy-bool"]
 warn_unreachable = true
 
 [tool.ruff]
-target-version = "py38"
 line-length = 100
 
 [tool.ruff.lint]