diff --git a/Gemfile.lock b/Gemfile.lock
index 212155e..7857f45 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -34,7 +34,7 @@ GEM
     dalli (2.7.4)
     diff-lcs (1.2.5)
     erubis (2.7.0)
-    execjs (2.5.2)
+    execjs (2.8.1)
     factory_girl (4.5.0)
       activesupport (>= 3.0.0)
     factory_girl_rails (4.5.0)
@@ -46,7 +46,7 @@ GEM
     jquery-rails (3.1.2)
       railties (>= 3.0, < 5.0)
       thor (>= 0.14, < 2.0)
-    json (1.8.3)
+    json (1.8.6)
     kgio (2.9.3)
     kindlerb (1.0.1)
       mustache
@@ -144,7 +144,7 @@ GEM
       polyglot (>= 0.3.1)
     tzinfo (1.2.2)
       thread_safe (~> 0.1)
-    uglifier (2.7.1)
+    uglifier (2.7.2)
       execjs (>= 0.3.0)
       json (>= 1.8.0)
     unicorn (4.9.0)