diff --git a/pyproject.toml b/pyproject.toml
index 8d904c768..736179784 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -92,7 +92,7 @@ dev = [
     "pytest==9.1.1",
     "pytest-xdist==3.8.0",
     "nbformat==5.10.4",
-    "ruff==0.15.18",
+    "ruff==0.15.21",
     "pre-commit==4.6.0",
     "pyvis==0.3.2",
     "scipy==1.16.3",  # 1.16.1+ required for Python 3.14 wheels