diff --git a/Gemfile.lock b/Gemfile.lock
index 023bfbe..906012c 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -1,7 +1,7 @@
 GEM
   remote: http://rubygems.org/
   specs:
-    activesupport (4.1.9)
+    activesupport (4.1.16)
       i18n (~> 0.6, >= 0.6.9)
       json (~> 1.7, >= 1.7.7)
       minitest (~> 5.1)
@@ -41,7 +41,7 @@ GEM
       uber (~> 0.0.4)
     http_parser.rb (0.6.0)
     i18n (0.6.11)
-    json (1.8.2)
+    json (1.8.6)
     kramdown (1.5.0)
     libv8 (3.16.14.7)
     listen (2.8.5)
@@ -85,7 +85,7 @@ GEM
     middleman-syntax (2.0.0)
       middleman-core (~> 3.2)
       rouge (~> 1.0)
-    minitest (5.5.1)
+    minitest (5.13.0)
     multi_json (1.10.1)
     padrino-helpers (0.12.4)
       i18n (~> 0.6, >= 0.6.7)
@@ -121,11 +121,11 @@ GEM
       libv8 (~> 3.16.14.0)
       ref
     thor (0.19.1)
-    thread_safe (0.3.4)
+    thread_safe (0.3.6)
     tilt (1.4.1)
     timers (4.0.1)
       hitimes
-    tzinfo (1.2.2)
+    tzinfo (1.2.5)
       thread_safe (~> 0.1)
     uber (0.0.13)
     uglifier (2.7.0)