diff --git a/Gemfile.lock b/Gemfile.lock
index 9f8f0ee..b5c3c2d 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -69,11 +69,11 @@ GEM
     sass (3.3.7)
     stringex (2.5.2)
     thor (0.19.1)
-    thread_safe (0.3.3)
+    thread_safe (0.3.6)
     timers (1.1.0)
     toml (0.1.1)
       parslet (~> 1.5.0)
-    tzinfo (1.1.0)
+    tzinfo (1.2.10)
       thread_safe (~> 0.1)
     yajl-ruby (1.1.0)
     yajl-ruby (1.1.0-x86-mingw32)