diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 8a0b292..b1f3fcc 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -8,18 +8,24 @@ jobs:
   test_matrix:
     runs-on: ubuntu-latest
     strategy:
+      fail-fast: false
       matrix:
-        ruby-version: ['2.6.9', '2.7.6', 'jruby-9.3.0.0']
+        ruby-version: ['2.7.6', 'jruby-9.4.11.0']
         gemfile:
-          - rails_52
           - rails_60
           - rails_61
         include:
           - ruby-version: 2.7.6
             gemfile: rails_70
-        exclude:
-          - ruby-version: 2.7.6
-            gemfile: rails_52
+          - ruby-version: 3.1.5
+            gemfile: rails_71
+          - ruby-version: 3.2.7
+            gemfile: rails_72
+          - ruby-version: 3.3.7
+            gemfile: rails_80
+
+
+
 
     env:
       RAILS_ENV: test
diff --git a/Appraisals b/Appraisals
index 76ec6aa..bb54ea1 100644
--- a/Appraisals
+++ b/Appraisals
@@ -1,17 +1,46 @@
 # https://github.com/thoughtbot/appraisal
 
-appraise "rails-52" do
-  gem 'activerecord', '~> 5.2.0'
-end
-
 appraise "rails-60" do
   gem 'activerecord', '~> 6.0.0'
+
+  # https://github.com/rails/rails/issues/54271
+  gem "concurrent-ruby", "< 1.3.5"
+
+  gem 'sqlite3', ">= 1.4.0", "< 2", :platform => [:ruby, :mswin]
 end
 
 appraise "rails-61" do
   gem 'activerecord', '~> 6.1.0'
+
+  # https://github.com/rails/rails/issues/54271
+  gem "concurrent-ruby", "< 1.3.5"
+
+  gem 'sqlite3', ">= 1.4.0", "< 2", :platform => [:ruby, :mswin]
 end
 
 appraise "rails-70" do
   gem 'activerecord', '~> 7.0.0'
+
+  # https://github.com/rails/rails/issues/54271
+  gem "concurrent-ruby", "< 1.3.5"
+
+  gem 'sqlite3', ">= 1.4.0", "< 2", :platform => [:ruby, :mswin]
+end
+
+appraise "rails-71" do
+  gem 'activerecord', '~> 7.1.0'
+
+  gem 'sqlite3', ">= 1.4.0", "< 3.0", :platform => [:ruby, :mswin]
+end
+
+appraise "rails-72" do
+  gem 'activerecord', '~> 7.2.0'
+
+  gem 'sqlite3', ">= 1.4.0", "< 3.0", :platform => [:ruby, :mswin]
+end
+
+appraise "rails-80" do
+  gem 'activerecord', '~> 8.0.0'
+
+  gem 'sqlite3', ">= 1.4.0", "< 3.0", :platform => [:ruby, :mswin]
 end
diff --git a/Gemfile b/Gemfile
index 902e0f4..bd41bf5 100644
--- a/Gemfile
+++ b/Gemfile
@@ -12,7 +12,4 @@ group :test do
   gem 'redcarpet', :platform => :ruby # For fast, Github-like Markdown
   gem 'kramdown', :platform => :jruby # For Markdown without a C compiler
   gem 'test-unit'
-
-  # This version of sqlite3 oughta be good for activerecord 5.1+ hopefully
-  gem 'sqlite3', ">= 1.4.0", "< 2.0", :platform => [:ruby, :mswin]
 end
diff --git a/gemfiles/rails_60.gemfile b/gemfiles/rails_60.gemfile
index 964c033..be6fe58 100644
--- a/gemfiles/rails_60.gemfile
+++ b/gemfiles/rails_60.gemfile
@@ -4,6 +4,8 @@ source "http://rubygems.org"
 
 gem "jruby-openssl", platform: :jruby
 gem "activerecord", "~> 6.0.0"
+gem "concurrent-ruby", "< 1.3.5"
+gem "sqlite3", ">= 1.4.0", "< 2", platform: [:ruby, :mswin]
 
 group :test do
   gem "activerecord-jdbcsqlite3-adapter", platform: [:jruby]
@@ -13,7 +15,6 @@ group :test do
   gem "redcarpet", platform: :ruby
   gem "kramdown", platform: :jruby
   gem "test-unit"
-  gem "sqlite3", ">= 1.4.0", "< 2.0", platform: [:ruby, :mswin]
 end
 
 gemspec path: "../"
diff --git a/gemfiles/rails_61.gemfile b/gemfiles/rails_61.gemfile
index c8027e0..690e100 100644
--- a/gemfiles/rails_61.gemfile
+++ b/gemfiles/rails_61.gemfile
@@ -4,6 +4,8 @@ source "http://rubygems.org"
 
 gem "jruby-openssl", platform: :jruby
 gem "activerecord", "~> 6.1.0"
+gem "concurrent-ruby", "< 1.3.5"
+gem "sqlite3", ">= 1.4.0", "< 2", platform: [:ruby, :mswin]
 
 group :test do
   gem "activerecord-jdbcsqlite3-adapter", platform: [:jruby]
@@ -13,7 +15,6 @@ group :test do
   gem "redcarpet", platform: :ruby
   gem "kramdown", platform: :jruby
   gem "test-unit"
-  gem "sqlite3", ">= 1.4.0", "< 2.0", platform: [:ruby, :mswin]
 end
 
 gemspec path: "../"
diff --git a/gemfiles/rails_70.gemfile b/gemfiles/rails_70.gemfile
index bdfa826..690d8a2 100644
--- a/gemfiles/rails_70.gemfile
+++ b/gemfiles/rails_70.gemfile
@@ -4,6 +4,8 @@ source "http://rubygems.org"
 
 gem "jruby-openssl", platform: :jruby
 gem "activerecord", "~> 7.0.0"
+gem "concurrent-ruby", "< 1.3.5"
+gem "sqlite3", ">= 1.4.0", "< 2", platform: [:ruby, :mswin]
 
 group :test do
   gem "activerecord-jdbcsqlite3-adapter", platform: [:jruby]
@@ -13,7 +15,6 @@ group :test do
   gem "redcarpet", platform: :ruby
   gem "kramdown", platform: :jruby
   gem "test-unit"
-  gem "sqlite3", ">= 1.4.0", "< 2.0", platform: [:ruby, :mswin]
 end
 
 gemspec path: "../"
diff --git a/gemfiles/rails_52.gemfile b/gemfiles/rails_71.gemfile
similarity index 79%
rename from gemfiles/rails_52.gemfile
rename to gemfiles/rails_71.gemfile
index fb6cab3..fea207b 100644
--- a/gemfiles/rails_52.gemfile
+++ b/gemfiles/rails_71.gemfile
@@ -3,7 +3,8 @@
 source "http://rubygems.org"
 
 gem "jruby-openssl", platform: :jruby
-gem "activerecord", "~> 5.2.0"
+gem "activerecord", "~> 7.1.0"
+gem "sqlite3", ">= 1.4.0", "< 3.0", platform: [:ruby, :mswin]
 
 group :test do
   gem "activerecord-jdbcsqlite3-adapter", platform: [:jruby]
@@ -13,7 +14,6 @@ group :test do
   gem "redcarpet", platform: :ruby
   gem "kramdown", platform: :jruby
   gem "test-unit"
-  gem "sqlite3", ">= 1.4.0", "< 2.0", platform: [:ruby, :mswin]
 end
 
 gemspec path: "../"
diff --git a/gemfiles/rails_72.gemfile b/gemfiles/rails_72.gemfile
new file mode 100644
index 0000000..63f6424
--- /dev/null
+++ b/gemfiles/rails_72.gemfile
@@ -0,0 +1,19 @@
+# This file was generated by Appraisal
+
+source "http://rubygems.org"
+
+gem "jruby-openssl", platform: :jruby
+gem "activerecord", "~> 7.2.0"
+gem "sqlite3", ">= 1.4.0", "< 3.0", platform: [:ruby, :mswin]
+
+group :test do
+  gem "activerecord-jdbcsqlite3-adapter", platform: [:jruby]
+  gem "libxml-ruby", platform: [:ruby, :mswin]
+  gem "rake"
+  gem "yard"
+  gem "redcarpet", platform: :ruby
+  gem "kramdown", platform: :jruby
+  gem "test-unit"
+end
+
+gemspec path: "../"
diff --git a/gemfiles/rails_80.gemfile b/gemfiles/rails_80.gemfile
new file mode 100644
index 0000000..07749a5
--- /dev/null
+++ b/gemfiles/rails_80.gemfile
@@ -0,0 +1,19 @@
+# This file was generated by Appraisal
+
+source "http://rubygems.org"
+
+gem "jruby-openssl", platform: :jruby
+gem "activerecord", "~> 8.0.0"
+gem "sqlite3", ">= 1.4.0", "< 3.0", platform: [:ruby, :mswin]
+
+group :test do
+  gem "activerecord-jdbcsqlite3-adapter", platform: [:jruby]
+  gem "libxml-ruby", platform: [:ruby, :mswin]
+  gem "rake"
+  gem "yard"
+  gem "redcarpet", platform: :ruby
+  gem "kramdown", platform: :jruby
+  gem "test-unit"
+end
+
+gemspec path: "../"
diff --git a/ruby-oai.gemspec b/ruby-oai.gemspec
index 78c3909..026e30b 100644
--- a/ruby-oai.gemspec
+++ b/ruby-oai.gemspec
@@ -15,10 +15,12 @@ Gem::Specification.new do |s|
     s.add_dependency('builder', '>=3.1.0')
     s.add_dependency('faraday', "< 3")
     s.add_dependency("faraday-follow_redirects", ">= 0.3.0", "< 2")
+    s.add_dependency("rexml") # rexml becomes bundled gem in ruby 3.0
 
 
-    s.add_development_dependency "activerecord", ">= 5.2.0", "< 7.1"
+    s.add_development_dependency "activerecord", ">= 5.2.0", "< 8.1"
     s.add_development_dependency "appraisal"
+    s.add_development_dependency "webrick"
 
 
     s.files = %w(README.md Rakefile) +
diff --git a/test/activerecord_provider/config/connection.rb b/test/activerecord_provider/config/connection.rb
index d90874a..7bb5c29 100755
--- a/test/activerecord_provider/config/connection.rb
+++ b/test/activerecord_provider/config/connection.rb
@@ -17,10 +17,14 @@
   ActiveRecord::MigrationContext.new(
     File.join(File.dirname(__FILE__), '..', 'database')
   ).migrate
-else
+elsif ActiveRecord.version < Gem::Version.new("7.2.0")
   ActiveRecord::MigrationContext.new(
     File.join(File.dirname(__FILE__), '..', 'database'),
     ActiveRecord::Base.connection.schema_migration
   ).migrate
+else
+  ActiveRecord::MigrationContext.new(
+    File.join(File.dirname(__FILE__), '..', 'database')
+  ).migrate
 end
 
diff --git a/test/client/tc_low_resolution_dates.rb b/test/client/tc_low_resolution_dates.rb
index 29565c0..4ba7cf0 100644
--- a/test/client/tc_low_resolution_dates.rb
+++ b/test/client/tc_low_resolution_dates.rb
@@ -3,7 +3,7 @@
 class LowResolutionDatesTest < Test::Unit::TestCase
 
   def test_low_res_date_parsing
-    client = OAI::Client.new 'http://authors.library.caltech.edu/cgi/oai2'
+    client = OAI::Client.new 'http://localhost:3333/oai'
 
     date = Date.new 2003, 1, 1