diff --git a/Gemfile.lock b/Gemfile.lock
index 09e1181f..e468087f 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -120,7 +120,7 @@ GEM
     docile (1.1.5)
     erubis (2.7.0)
     excon (0.45.4)
-    execjs (2.6.0)
+    execjs (2.7.0)
     factory_girl (4.5.0)
       activesupport (>= 3.0.0)
     factory_girl_rails (4.5.0)
@@ -130,6 +130,7 @@ GEM
       multipart-post (>= 1.2, < 3)
     faraday_middleware (0.10.0)
       faraday (>= 0.7.4, < 0.10)
+    ffi (1.9.10)
     ffi (1.9.10-java)
     figaro (1.1.1)
       thor (~> 0.14)
@@ -252,8 +253,8 @@ GEM
       thor (>= 0.14, < 2.0)
     jquery-ui-rails (4.0.5)
       railties (>= 3.1.0)
-    json (1.8.3)
-    json (1.8.3-java)
+    json (1.8.6)
+    json (1.8.6-java)
     launchy (2.4.3)
       addressable (~> 2.3)
     launchy (2.4.3-java)
@@ -387,9 +388,8 @@ GEM
     tilt (2.0.1)
     tzinfo (1.2.2)
       thread_safe (~> 0.1)
-    uglifier (2.7.2)
-      execjs (>= 0.3.0)
-      json (>= 1.8.0)
+    uglifier (4.0.2)
+      execjs (>= 0.3.0, < 3)
     warden (1.2.3)
       rack (>= 1.0)
     websocket-driver (0.6.2)