diff --git a/common/static/js/vendor/annotator.js b/common/static/js/vendor/annotator.js
index f66baa2c7e..9aa4bcbe21 100644
--- a/common/static/js/vendor/annotator.js
+++ b/common/static/js/vendor/annotator.js
@@ -1264,15 +1264,15 @@
   g = util.getGlobal();
 
   if (((_ref1 = g.document) != null ? _ref1.evaluate : void 0) == null) {
-    $.getScript('http://assets.annotateit.org/vendor/xpath.min.js');
+    $.getScript('//assets.annotateit.org/vendor/xpath.min.js');
   }
 
   if (g.getSelection == null) {
-    $.getScript('http://assets.annotateit.org/vendor/ierange.min.js');
+    $.getScript('//assets.annotateit.org/vendor/ierange.min.js');
   }
 
   if (g.JSON == null) {
-    $.getScript('http://assets.annotateit.org/vendor/json2.min.js');
+    $.getScript('//assets.annotateit.org/vendor/json2.min.js');
   }
 
   Annotator.$ = $;