diff --git a/Gemfile.lock b/Gemfile.lock
index fc55551..6af604c 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -41,14 +41,14 @@ GEM
       execjs
     coffee-script-source (1.8.0)
     erubis (2.7.0)
-    execjs (2.2.2)
+    execjs (2.8.1)
     hike (1.2.3)
     i18n (0.6.11)
     journey (1.0.4)
     jquery-rails (3.1.2)
       railties (>= 3.0, < 5.0)
       thor (>= 0.14, < 2.0)
-    json (1.8.1)
+    json (1.8.6)
     mail (2.5.4)
       mime-types (~> 1.16)
       treetop (~> 1.4.8)
@@ -105,7 +105,7 @@ GEM
       polyglot
       polyglot (>= 0.3.1)
     tzinfo (0.3.42)
-    uglifier (2.6.0)
+    uglifier (2.7.2)
       execjs (>= 0.3.0)
       json (>= 1.8.0)