diff --git a/docs/options.md b/docs/options.md
index 3f6ca94b8..c4da1398c 100644
--- a/docs/options.md
+++ b/docs/options.md
@@ -98,6 +98,8 @@ Put the `>` of a multi-line JSX element at the end of the last line instead of b
 
 ## Arrow Function Parentheses
 
+_available in v1.9.0+_
+
 Include parentheses around a sole arrow function parameter.
 
 Valid options: