diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index 4b64b9c15..f688c7ed6 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -14,7 +14,7 @@ repos:
         files: '^src/\w+/(tests|0\.0\.0)/.*\.py$'
 
   - repo: https://github.com/astral-sh/ruff-pre-commit
-    rev: v0.12.0
+    rev: v0.13.0
     hooks:
     - id: ruff
       name: Check code with Ruff, apply automatic fixes
@@ -22,11 +22,11 @@ repos:
     - id: ruff-format
       name: Format code with Ruff
   - repo: https://github.com/crate-ci/typos
-    rev: v1.33.1
+    rev: v1.36.2
     hooks:
       - id: typos
   - repo: https://github.com/pre-commit/pre-commit-hooks
-    rev: v5.0.0
+    rev: v6.0.0
     hooks:
     - id: check-xml
     - id: check-yaml
diff --git a/src/util/convert_bootstrap.py b/src/util/convert_bootstrap.py
index b00ecb61e..4a4099e8e 100644
--- a/src/util/convert_bootstrap.py
+++ b/src/util/convert_bootstrap.py
@@ -1146,7 +1146,7 @@ def convert_tree(tree, src_version, dst_version, **converter_kwargs):
     :return: the converted lxml tree.
     :rtype: etree.ElementTree
     """
-    tree, ops_count = BootstrapConverter(tree, **converter_kwargs).convert(src_version, dst_version)
+    tree, _ops_count = BootstrapConverter(tree, **converter_kwargs).convert(src_version, dst_version)
     return tree