diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index 516eef8..0a93756 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -9,7 +9,7 @@ repos:
       - id: end-of-file-fixer
       - id: trailing-whitespace
   - repo: https://github.com/astral-sh/ruff-pre-commit
-    rev: v0.4.4
+    rev: v0.5.1
     hooks:
       - id: ruff
         args: [--exit-non-zero-on-fix]
diff --git a/src/manifestoo/commands/tree.py b/src/manifestoo/commands/tree.py
index 005901b..7c515a6 100644
--- a/src/manifestoo/commands/tree.py
+++ b/src/manifestoo/commands/tree.py
@@ -27,7 +27,7 @@ def key(addon_name: str) -> NodeKey:
         return addon_name
 
     def print(self, odoo_series: OdooSeries, fold_core_addons: bool) -> None:
-        seen: Set["Node"] = set()
+        seen: Set[Node] = set()
 
         def _print(indent: List[str], node: Node) -> None:
             # inspired by https://stackoverflow.com/a/59109706