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"