diff --git a/Gemfile b/Gemfile
index 533d7665..d63b478d 100644
--- a/Gemfile
+++ b/Gemfile
@@ -2,50 +2,50 @@ source "https://rubygems.org"
 
 ruby "2.2.4"
 
-gem "rails", "4.2.5.2"
+gem "rails", "6.1.7.4"
 gem "pg"
 
 # assets
 gem "autoprefixer-rails"
-gem "coffee-rails"
+gem "coffee-rails", ">= 4.2.2"
 gem "foundation-icons-sass-rails"
-gem "foundation-rails", "~> 5.5.2.1"
-gem "jquery-rails"
-gem "sass-rails", "~> 5.0.0"
+gem "foundation-rails", "~> 5.5.3.1"
+gem "jquery-rails", ">= 4.1.1"
+gem "sass-rails", "~> 5.0.8"
 gem "skim", git: "https://github.com/jfirebaugh/skim"
 gem "therubyracer", platforms: :ruby
 gem "uglifier", ">= 2.7.2"
 
 # views
-gem "active_link_to"
+gem "active_link_to", ">= 1.0.4"
 gem "country_select"
 gem "metamagic"
-gem "simple_form"
+gem "simple_form", ">= 4.0.0"
 gem "slim"
 
 # all other gems
 gem "decent_decoration"
 gem "decent_exposure"
-gem "devise"
-gem "draper"
+gem "devise", ">= 4.7.0"
+gem "draper", ">= 3.1.0"
 gem "flamegraph"
 gem "geocoder"
 gem "google-analytics-rails"
-gem "health_check"
+gem "health_check", ">= 1.7.2"
 gem "interactor"
-gem "kaminari"
-gem "local_time"
+gem "kaminari", ">= 0.17.0"
+gem "local_time", ">= 2.0.0"
 gem "memory_profiler"
 gem "pg_search"
 gem "puma"
 gem "pundit"
 gem "rack-canonical-host"
 gem "rack-mini-profiler", require: false
-gem "responders"
+gem "responders", ">= 3.0.0"
 gem "rollbar"
 gem "seedbank"
 gem "stackprof"
-gem "stripe-rails"
+gem "stripe-rails", ">= 0.4.0"
 
 group :staging, :production do
   gem "dalli"
@@ -72,15 +72,15 @@ group :development, :test do
   gem "bundler-audit", require: false
   gem "byebug"
   gem "coffeelint"
-  gem "dotenv-rails"
-  gem "factory_girl_rails"
+  gem "dotenv-rails", ">= 2.7.6"
+  gem "factory_girl_rails", ">= 4.7.0"
   gem "faker"
   gem "fuubar", "~> 2.0.0.rc1"
   gem "jasmine", "> 2.0"
   gem "jasmine-jquery-rails"
   gem "pry-rails"
   gem "rails_best_practices", require: false
-  gem "rspec-rails", "~> 3.0"
+  gem "rspec-rails", "~> 3.5", ">= 3.5.0"
   gem "rubocop", require: false
   gem "rubocop-rspec", require: false
   gem "scss_lint", require: false
@@ -93,8 +93,8 @@ group :development do
   gem "letter_opener"
   gem "quiet_assets"
   gem "rails-erd"
-  gem "slim-rails"
+  gem "slim-rails", ">= 3.1.0"
   gem "spring"
   gem "spring-commands-rspec"
-  gem "web-console", "~> 2.0"
+  gem "web-console", "~> 3.0", ">= 3.0.0"
 end