diff --git a/src/index.js b/src/index.js
index 824a5fe..7f03892 100644
--- a/src/index.js
+++ b/src/index.js
@@ -6,6 +6,7 @@ const RIGHT = '-->';
 const ENCODE = [
   ['&', '&'],
   ['>', '>'],
+  ['<', '&lt;'],
 ];
 
 const DATA_KEY = 'hypernova-key';