diff --git a/Gemfile.lock b/Gemfile.lock
index 51b367d..007763a 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -48,7 +48,7 @@ GEM
       railties (~> 3.1)
       warden (~> 1.1.1)
     erubis (2.7.0)
-    execjs (1.3.2)
+    execjs (1.4.0)
       multi_json (~> 1.0)
     fastercsv (1.5.5)
     geokit (1.6.5)