diff --git a/lua/plugins/null_ls.lua b/lua/plugins/null_ls.lua
index 26ae880..504e279 100644
--- a/lua/plugins/null_ls.lua
+++ b/lua/plugins/null_ls.lua
@@ -12,7 +12,7 @@ return {
         -- python
         -- null_ls.builtins.diagnostics.pylint,
         null_ls.builtins.formatting.black,
-        null_ls.builtins.formatting.isort,
+        null_ls.builtins.diagnostics.ruff,
         -- typescript
         null_ls.builtins.formatting.prettier,
         -- lua