diff --git a/Gemfile.lock b/Gemfile.lock
index 4cf9874..cba243e 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -46,7 +46,7 @@ GEM
       thread_safe (~> 0.3, >= 0.3.1)
     equalizer (0.0.11)
     erubis (2.7.0)
-    execjs (2.5.2)
+    execjs (2.8.1)
     grape (0.11.0)
       activesupport
       builder
@@ -67,7 +67,7 @@ GEM
     jquery-rails (3.1.2)
       railties (>= 3.0, < 5.0)
       thor (>= 0.14, < 2.0)
-    json (1.8.2)
+    json (1.8.6)
     mail (2.6.3)
       mime-types (>= 1.16, < 3)
     mime-types (2.5)
@@ -126,7 +126,7 @@ GEM
       coffee-rails
     tzinfo (1.2.2)
       thread_safe (~> 0.1)
-    uglifier (2.7.1)
+    uglifier (2.7.2)
       execjs (>= 0.3.0)
       json (>= 1.8.0)
     virtus (1.0.5)