diff --git a/pyproject.toml b/pyproject.toml
index 9cf85cfdfea..224abe514dc 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -30,7 +30,7 @@ flatpak = [
 ]
 
 lint = [
-    "clang-format==20.*",
+    "clang-format==21.*",
     "flake8==7.3.0",
 ]