diff --git a/pyproject.toml b/pyproject.toml
index ab375c1..a902be0 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -70,7 +70,7 @@ ecosystem = [
     "scpn-quantum-control>=0.9.11",
 ]
 dev = [
-    "ruff==0.15.20",
+    "ruff==0.15.21",
     "mypy==2.1.0",
     "bandit==1.9.4",
     "pytest>=8.0",