diff --git a/pyproject.toml b/pyproject.toml
index 31c2e1d..b9ea045 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -38,7 +38,7 @@ black = [
     "black==26.5.1",
 ]
 ruff = [
-    "ruff==0.15.20",
+    "ruff==0.15.21",
 ]
 
 [project.scripts]
diff --git a/requirements_ruff.txt b/requirements_ruff.txt
index ac683fa..ef7e10f 100644
--- a/requirements_ruff.txt
+++ b/requirements_ruff.txt
@@ -1 +1 @@
-ruff==0.15.20
+ruff==0.15.21