diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index 9200adbb6..2f5f6beb8 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -13,13 +13,13 @@ repos:
       - id: check-yaml
         files: .*\.(yaml|yml)$
   - repo: https://opendev.org/openstack/hacking
-    rev: 7.0.0
+    rev: 8.0.0
     hooks:
       - id: hacking
         additional_dependencies: []
         exclude: '^(doc|releasenotes|tools)/.*$'
   - repo: https://github.com/asottile/pyupgrade
-    rev: v3.20.0
+    rev: v3.21.2
     hooks:
       - id: pyupgrade
         args: [--py310-plus]
diff --git a/taskflow/examples/99_bottles.py b/taskflow/examples/99_bottles.py
index 7e94df425..f73e01524 100644
--- a/taskflow/examples/99_bottles.py
+++ b/taskflow/examples/99_bottles.py
@@ -194,7 +194,6 @@ def main_local():
     # the examples are made sure to still function correctly...
     global TAKE_DOWN_DELAY
     global PASS_AROUND_DELAY
-    global JB_CONF
     # Make everything go much faster (so that this finishes quickly).
     PASS_AROUND_DELAY = 0.01
     TAKE_DOWN_DELAY = 0.01