diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index ad7035f..f445ac3 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -14,10 +14,6 @@ jobs:
           gemfile: gemfiles/rails60.gemfile
         - ruby: 2.6
           gemfile: gemfiles/rails52.gemfile
-        - ruby: 2.5
-          gemfile: gemfiles/rails51.gemfile
-        - ruby: 2.4
-          gemfile: gemfiles/rails50.gemfile
     env:
       BUNDLE_GEMFILE: ${{ matrix.gemfile }}
     steps:
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 75e2378..24ec385 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,7 @@
 ## 0.3.0 (unreleased)
 
 - Disabled geocoding by default for new installations
+- Removed support for Rails < 5.2 and Ruby < 2.6
 
 ## 0.2.2 (2020-11-21)
 
diff --git a/Gemfile b/Gemfile
index a52bfb6..647d353 100644
--- a/Gemfile
+++ b/Gemfile
@@ -2,5 +2,9 @@ source "https://rubygems.org"
 
 gemspec
 
-gem "railties", "~> 6.1.0"
-gem "activerecord", "~> 6.1.0"
+gem "rake"
+gem "minitest", ">= 5"
+gem "combustion"
+gem "rails", "~> 6.1.0"
+gem "sqlite3"
+gem "devise"
diff --git a/LICENSE.txt b/LICENSE.txt
index 2208645..ee290bc 100644
--- a/LICENSE.txt
+++ b/LICENSE.txt
@@ -1,4 +1,4 @@
-Copyright (c) 2017-2020 Andrew Kane
+Copyright (c) 2017-2021 Andrew Kane
 
 MIT License
 
diff --git a/Rakefile b/Rakefile
index 1d5c515..24c24d3 100644
--- a/Rakefile
+++ b/Rakefile
@@ -4,7 +4,7 @@ require "rake/testtask"
 Rake::TestTask.new(:test) do |t|
   t.libs << "test"
   t.test_files = FileList["test/**/*_test.rb"]
-  t.warning = false
+  t.warning = false # for devise
 end
 
 task default: :test
diff --git a/authtrail.gemspec b/authtrail.gemspec
index 3ef3cfe..afa445e 100644
--- a/authtrail.gemspec
+++ b/authtrail.gemspec
@@ -8,23 +8,15 @@ Gem::Specification.new do |spec|
   spec.license       = "MIT"
 
   spec.author        = "Andrew Kane"
-  spec.email         = "andrew@chartkick.com"
+  spec.email         = "andrew@ankane.org"
 
   spec.files         = Dir["*.{md,txt}", "{app,lib}/**/*"]
   spec.require_path  = "lib"
 
-  spec.required_ruby_version = ">= 2.4"
+  spec.required_ruby_version = ">= 2.6"
 
-  spec.add_dependency "railties", ">= 5"
-  spec.add_dependency "activerecord", ">= 5"
+  spec.add_dependency "railties", ">= 5.2"
+  spec.add_dependency "activerecord", ">= 5.2"
   spec.add_dependency "warden"
   spec.add_dependency "geocoder"
-
-  spec.add_development_dependency "bundler"
-  spec.add_development_dependency "rake"
-  spec.add_development_dependency "minitest", ">= 5"
-  spec.add_development_dependency "combustion"
-  spec.add_development_dependency "rails"
-  spec.add_development_dependency "sqlite3"
-  spec.add_development_dependency "devise"
 end
diff --git a/gemfiles/rails50.gemfile b/gemfiles/rails50.gemfile
deleted file mode 100644
index 6b77063..0000000
--- a/gemfiles/rails50.gemfile
+++ /dev/null
@@ -1,6 +0,0 @@
-source "https://rubygems.org"
-
-gemspec path: ".."
-
-gem "rails", "~> 5.0.0"
-gem "sqlite3", "~> 1.3.0"
diff --git a/gemfiles/rails51.gemfile b/gemfiles/rails51.gemfile
deleted file mode 100644
index 33a2daa..0000000
--- a/gemfiles/rails51.gemfile
+++ /dev/null
@@ -1,5 +0,0 @@
-source "https://rubygems.org"
-
-gemspec path: ".."
-
-gem "rails", "~> 5.1.0"
diff --git a/gemfiles/rails52.gemfile b/gemfiles/rails52.gemfile
index f193894..44783b9 100644
--- a/gemfiles/rails52.gemfile
+++ b/gemfiles/rails52.gemfile
@@ -2,4 +2,9 @@ source "https://rubygems.org"
 
 gemspec path: ".."
 
+gem "rake"
+gem "minitest", ">= 5"
+gem "combustion"
 gem "rails", "~> 5.2.0"
+gem "sqlite3"
+gem "devise"
diff --git a/gemfiles/rails60.gemfile b/gemfiles/rails60.gemfile
index abff09a..beb50d9 100644
--- a/gemfiles/rails60.gemfile
+++ b/gemfiles/rails60.gemfile
@@ -2,4 +2,9 @@ source "https://rubygems.org"
 
 gemspec path: ".."
 
+gem "rake"
+gem "minitest", ">= 5"
+gem "combustion"
 gem "rails", "~> 6.0.0"
+gem "sqlite3"
+gem "devise"
diff --git a/test/test_helper.rb b/test/test_helper.rb
index f2a9cb2..3ed8f85 100644
--- a/test/test_helper.rb
+++ b/test/test_helper.rb
@@ -1,5 +1,5 @@
 require "bundler/setup"
-Bundler.require(:development)
+Bundler.require
 require "minitest/autorun"
 require "minitest/pride"