diff --git a/pyproject.toml b/pyproject.toml
index af55df6..0877c43 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -23,7 +23,7 @@ dependencies = [
 ]
 
 [project.optional-dependencies]
-dev = ["ruff==0.12.9"]
+dev = ["ruff==0.14.9"]
 
 [project.urls]
 repository="https://github.com/OlleLindgren/pyrefact"