diff --git a/Gemfile b/Gemfile
index a901a3c..944b680 100644
--- a/Gemfile
+++ b/Gemfile
@@ -1,15 +1,15 @@
 source "https://rubygems.org"
 ruby "2.7.5"
 
-gem "sinatra", "~>2.0.2"
-gem "sinatra-contrib"
-gem "puma"
-gem "dalli"
-gem "rubyzip"
-gem "excon"
+gem "sinatra", "~> 2.2.3"
+gem "sinatra-contrib", ">= 2.2.3"
+gem "puma", ">= 5.6.4"
+gem "dalli", ">= 3.2.3"
+gem "rubyzip", ">= 1.3.0"
+gem "excon", ">= 0.71.0"
 gem "sinatra-asset-pipeline"
 gem "scrolls"
-gem "heroku-bouncer"
+gem "heroku-bouncer", ">= 0.9.0"
 gem "git_hub_integration", "0.1.4", source: "https://packagecloud.io/heroku/gemgate/"
 gem "redis"
 gem "octokit"
@@ -23,6 +23,6 @@ end
 
 group "test" do
   gem "minitest"
-  gem "rack-test"
+  gem "rack-test", ">= 2.0.0"
   gem "webmock"
 end