1 files changed, 2 insertions, 1 deletions

diff --git a/Gemfile b/Gemfile
index b1261c6..6a6c641 100644
--- a/Gemfile
+++ b/Gemfile
@@ -40,7 +40,8 @@ group :development do
   gem "beaker-hostgenerator"
   gem "beaker-rspec"
   gem "beaker-puppet", *location_for(ENV['BEAKER_PUPPET_VERSION'] || '~> 1.22')
-  gem "github_changelog_generator",                                             require: false
+  gem "github_changelog_generator", '= 1.16.4',                                 require: false
+  gem "concurrent-ruby", '= 1.1.10',                                            require: false
   gem "async", '~> 1',                                                          require: false
   gem "beaker-module_install_helper",                                           require: false
   gem "beaker-puppet_install_helper",                                           require: false