diff --git a/Gemfile.lock b/Gemfile.lock
index 25c1bac..70ef6c6 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -11,7 +11,7 @@ GIT
 GEM
   remote: https://rubygems.org/
   specs:
-    activesupport (5.2.1)
+    activesupport (5.2.4.5)
       concurrent-ruby (~> 1.0, >= 1.0.2)
       i18n (>= 0.7, < 2)
       minitest (~> 5.1)
@@ -22,7 +22,7 @@ GEM
       thor (~> 0.19)
     coderay (1.1.2)
     colorator (1.1.0)
-    concurrent-ruby (1.1.5)
+    concurrent-ruby (1.1.8)
     em-websocket (0.5.1)
       eventmachine (>= 0.12.9)
       http_parser.rb (~> 0.6.0)
@@ -89,7 +89,7 @@ GEM
     method_source (0.9.2)
     mini_magick (4.8.0)
     mini_portile2 (2.4.0)
-    minitest (5.11.3)
+    minitest (5.14.3)
     nokogiri (1.10.3)
       mini_portile2 (~> 2.4.0)
     octopress (3.0.12.pre.1)
@@ -134,7 +134,7 @@ GEM
     thor (0.20.3)
     thread_safe (0.3.6)
     titlecase (0.1.1)
-    tzinfo (1.2.5)
+    tzinfo (1.2.9)
       thread_safe (~> 0.1)
     uglifier (4.1.20)
       execjs (>= 0.3.0, < 3)