diff --git a/.eslintrc b/.eslintrc
index aa7d9f2..aafda4b 100644
--- a/.eslintrc
+++ b/.eslintrc
@@ -855,7 +855,7 @@ rules:
 
   # require parens in arrow function arguments
   # http://eslint.org/docs/rules/arrow-parens
-  arrow-parens: 0
+  arrow-parens: 2
 
   # require space before/after arrow function's arrow
   # http://eslint.org/docs/rules/arrow-spacing