diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index 9c18a23..75e78f1 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -3,7 +3,7 @@ default_install_hook_types: [pre-commit, pre-push]
 repos:
   - repo: https://github.com/astral-sh/ruff-pre-commit
     # Ruff version.
-    rev: v0.16.2
+    rev: v0.16.3
     hooks:
       # Auto-fix lint issues on staged files and block the commit if any finding remains after the fix. The codebase reached zero findings under the real default ruleset (see the fix/remaining-ruff-findings PR chain), so this hook now enforces that state locally, matching CI's ruff check . rather than just warning about drift from it.
       - id: ruff-check
diff --git a/pyproject.toml b/pyproject.toml
index 0e28833..cde15c6 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -29,7 +29,7 @@ dependencies = [
 
 [project.optional-dependencies]
 run = ["pandas", "pywr"]
-dev = ["pytest>=8.0", "pytest-cov>=5.0", "mypy>=1.10", "pandas-stubs", "vulture>=2.11", "bandit>=1.7", "pip-audit>=2.7", "ruff==0.16.2"]
+dev = ["pytest>=8.0", "pytest-cov>=5.0", "mypy>=1.10", "pandas-stubs", "vulture>=2.11", "bandit>=1.7", "pip-audit>=2.7", "ruff==0.16.3"]
 
 [project.scripts]
 pywr-utils = "pywr_utils.cli:main"