diff --git a/Gemfile.lock b/Gemfile.lock
index 329c25b..27d57d9 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -33,7 +33,7 @@ GEM
     hashie (3.5.1)
     i18n (0.7.0)
     kramdown (1.13.2)
-    libv8 (3.16.14.19-x86_64-darwin-15)
+    libv8 (3.16.14.19)
     listen (3.0.8)
       rb-fsevent (~> 0.9, >= 0.9.4)
       rb-inotify (~> 0.9, >= 0.9.7)
@@ -111,9 +111,9 @@ GEM
       libv8 (~> 3.16.14.15)
       ref
     thor (0.19.4)
-    thread_safe (0.3.5)
+    thread_safe (0.3.6)
     tilt (2.0.6)
-    tzinfo (1.2.2)
+    tzinfo (1.2.10)
       thread_safe (~> 0.1)
     uglifier (3.0.4)
       execjs (>= 0.3.0, < 3)