diff --git a/Gemfile.lock b/Gemfile.lock
index bc8eb01..a2f7275 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -15,8 +15,8 @@ GEM
     i18n (0.7.0)
     json (1.8.6)
     minitest (5.9.1)
-    thread_safe (0.3.5)
-    tzinfo (1.2.2)
+    thread_safe (0.3.6)
+    tzinfo (1.2.10)
       thread_safe (~> 0.1)
 
 PLATFORMS