diff --git a/pyproject.toml b/pyproject.toml
index 153dee60..e769c69e 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -29,7 +29,7 @@ classifiers = [
 ]
 
 [project.optional-dependencies]
-dev = ["flake8", "ruff == 0.3.1", "pytest"]
+dev = ["flake8", "ruff == 0.4.1", "pytest"]
 
 [project.scripts]
 gyp = "gyp:script_main"