--- a/Makefile	Tue Jan 30 12:40:55 2018 +0800
+++ b/Makefile	Tue Jun 19 13:09:34 2018 +0800
@@ -8,8 +8,8 @@
 libs := libs
 jquery_version := 3.3.1
 jquery_sha256 := b8442ed017e5311995d7174afe7ee1d06485915def347644971efcc8338d37b4
-underscore_version := 1.8.3
-underscore_sha256 := bb00bd290142f1a5ae09ff426e9684f4a3c02f20df34bef0e1c6039a6ebac740
+underscore_version := 1.9.1
+underscore_sha256 := 2d6564aaa540a704fb198e023bc0f62a4f037baeac192e9d68df622c1d653d7e
 backbone_version := 1.3.3
 backbone_sha256 := 7a20331721385d9fedfe492dec2110b6695b0d2150c8effdc3804eaaa948dc74
 rivets_version := 0.9.4

--- a/index.html	Tue Jan 30 12:40:55 2018 +0800
+++ b/index.html	Tue Jun 19 13:09:34 2018 +0800
@@ -10,7 +10,7 @@
     <link rel="stylesheet" href="/libs/uikit/2.27.5/css/components/progress.gradient.min.css">
 
     <script src="/libs/jquery/3.3.1/jquery.min.js"></script>
-    <script src="/libs/underscore/1.8.3/underscore-min.js"></script>
+    <script src="/libs/underscore/1.9.1/underscore-min.js"></script>
     <script src="/libs/backbone/1.3.3/backbone-min.js"></script>
     <script src="/libs/rivets/0.9.4/rivets.bundled.min.js"></script>