diff --git a/Gemfile.lock b/Gemfile.lock
index 1eef550..a9ac67b 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -56,8 +56,7 @@ GEM
       railties (~> 3.1)
       warden (~> 1.2.1)
     erubis (2.7.0)
-    execjs (1.4.0)
-      multi_json (~> 1.0)
+    execjs (2.0.0)
     fastercsv (1.5.5)
     font-awesome-rails (3.2.1.3)
       railties (>= 3.2, < 5.0)