diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index dbf712c..1fe8851 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -31,7 +31,7 @@ repos:
     files: src
     additional_dependencies:
     - rich>=12
-    - click>=8.1.1
+    - click==8.1.3
     - hist
     - numpy
     - textual>=0.27
diff --git a/src/uproot_browser/tui/browser.py b/src/uproot_browser/tui/browser.py
index 4cb5c1a..42d4bb5 100644
--- a/src/uproot_browser/tui/browser.py
+++ b/src/uproot_browser/tui/browser.py
@@ -6,7 +6,7 @@
 import contextlib
 import sys
 from pathlib import Path
-from typing import Any
+from typing import Any, ClassVar
 
 import plotext as plt
 import rich.syntax
@@ -53,7 +53,9 @@ class Browser(textual.app.App[object]):
     """A basic implementation of the uproot-browser TUI"""
 
     CSS_PATH = "browser.css"
-    BINDINGS = [
+    BINDINGS: ClassVar[
+        list[textual.binding.Binding | tuple[str, str] | tuple[str, str, str]]
+    ] = [
         textual.binding.Binding("b", "toggle_files", "Navbar"),
         textual.binding.Binding("q", "quit", "Quit"),
         textual.binding.Binding("d", "quit_with_dump", "Dump & Quit"),
diff --git a/src/uproot_browser/tui/help.py b/src/uproot_browser/tui/help.py
index 5104933..1f970c0 100644
--- a/src/uproot_browser/tui/help.py
+++ b/src/uproot_browser/tui/help.py
@@ -1,6 +1,7 @@
 from __future__ import annotations
 
 import typing
+from typing import ClassVar
 
 import textual.app
 import textual.binding
@@ -20,7 +21,9 @@
 
 
 class HelpScreen(ModalScreen):
-    BINDINGS = [
+    BINDINGS: ClassVar[
+        list[textual.binding.Binding | tuple[str, str] | tuple[str, str, str]]
+    ] = [
         textual.binding.Binding("d", "", "Nothing", show=False),
         textual.binding.Binding("b", "", "Nothing", show=False),
         textual.binding.Binding("f1", "", "Nothing", show=False),
diff --git a/src/uproot_browser/tui/left_panel.py b/src/uproot_browser/tui/left_panel.py
index 78c3e14..5cd734d 100644
--- a/src/uproot_browser/tui/left_panel.py
+++ b/src/uproot_browser/tui/left_panel.py
@@ -1,7 +1,7 @@
 from __future__ import annotations
 
 from pathlib import Path
-from typing import Any
+from typing import Any, ClassVar
 
 import rich.panel
 import rich.repr
@@ -28,7 +28,9 @@ def __init__(self, upfile: Any, path: str) -> None:
 class UprootTree(textual.widgets.Tree[UprootEntry]):
     """currently just extending DirectoryTree, showing current path"""
 
-    BINDINGS = [
+    BINDINGS: ClassVar[
+        list[textual.binding.Binding | tuple[str, str] | tuple[str, str, str]]
+    ] = [
         textual.binding.Binding("h", "cursor_out", "Cursor out", show=False),
         textual.binding.Binding("j", "cursor_down", "Cursor Down", show=False),
         textual.binding.Binding("k", "cursor_up", "Cursor Up", show=False),