diff --git a/Gemfile.lock b/Gemfile.lock
index 39550ea..3eb6931 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -6,7 +6,7 @@ PATH
       carrierwave (~> 1.0.0)
 
 GEM
-  remote: http://rubygems.org/
+  remote: https://rubygems.org/
   specs:
     activemodel (5.0.2)
       activesupport (= 5.0.2)
@@ -43,7 +43,7 @@ GEM
       guard (>= 1.1)
       rspec (~> 2.11)
     i18n (0.8.1)
-    json (2.0.3)
+    json (2.3.1)
     listen (3.1.5)
       rb-fsevent (~> 0.9, >= 0.9.4)
       rb-inotify (~> 0.9, >= 0.9.7)