diff --git a/Gemfile b/Gemfile
index 65c4ab3..fc52aca 100644
--- a/Gemfile
+++ b/Gemfile
@@ -3,7 +3,7 @@ source 'https://rubygems.org'
 plugin "bundler-inject", "~> 1.1"
 require File.join(Bundler::Plugin.index.load_paths("bundler-inject")[0], "bundler-inject") rescue nil
 
-gem 'activesupport',        "~> 5.2.4.3", :require => false
+gem 'activesupport',        "~> 5.2.8.0", :require => false
 gem 'more_core_extensions',               :require => false
 gem 'octokit',              "~> 4.3",     :require => false
 gem 'optimist',                           :require => false