diff --git a/Gemfile.lock b/Gemfile.lock
index 39550ea..a25c137 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)
@@ -86,7 +86,7 @@ GEM
     sqlite3 (1.3.13)
     thor (0.19.4)
     thread_safe (0.3.6)
-    tzinfo (1.2.3)
+    tzinfo (1.2.11)
       thread_safe (~> 0.1)
 
 PLATFORMS