diff --git a/Gemfile b/Gemfile
index c3b87a8f..587b85bc 100644
--- a/Gemfile
+++ b/Gemfile
@@ -1,11 +1,11 @@
 source 'https://rubygems.org'
 ruby "~> 2.7.0"
 
-gem "sinatra", "~> 2.1"
-gem "sinatra-contrib", "~> 2.1"
+gem "sinatra", "~> 2.1", ">= 2.1.0"
+gem "sinatra-contrib", "~> 2.1", ">= 2.1.0"
 gem "erector", ">=0.9.0"
 gem "puma", "~> 5.1"
-gem "activesupport", "~> 6.0", ">= 6.0.3.1"
+gem "activesupport", "~> 6.1", ">= 6.1.7.1"
 gem "json", "~> 2.3", ">= 2.3.1"
 gem "rack-rewrite", "~>1.5"
 gem "sassc", "~> 2.4", ">= 2.4.0"
@@ -17,7 +17,7 @@ gem "barnes", "~> 0.0.7"
 gem "nokogiri", "~> 1.10", ">= 1.10.10" # fixed versions, for Windows
 gem 'newrelic_rpm', '~> 6.12', ">= 6.12.0.367"
 gem "oj", "~> 3.10", ">= 3.10.13"
-gem "rack-cache", "~> 1.12", ">= 1.12.0"
+gem "rack-cache", "~> 1.12", ">= 1.12.1"
 gem "rake", "~> 13.0"
 gem "rake-notes", "~> 0.2"
 gem "rspec", "~> 3.8"