diff --git a/docs/options.md b/docs/options.md
index 35b9d9c357..fea477fe34 100644
--- a/docs/options.md
+++ b/docs/options.md
@@ -461,3 +461,8 @@ with info about your project (name and website) so we can add an entry for you.
 
     *   Website: https://github.com/cybozu/protobuf
     *   Extension: 1179
+
+1.  Wire use_array
+
+    *   Website: https://square.github.io/wire/
+    *   Extensions: 1180