diff --git a/.github/workflows/canary.yml b/.github/workflows/canary.yml
index 0333b255..cb8d1b80 100644
--- a/.github/workflows/canary.yml
+++ b/.github/workflows/canary.yml
@@ -13,7 +13,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        ruby: ['3.1', '3.2', '3.3', 'head', 'jruby-9.4', 'jruby-head']
+        ruby: ['3.2', '3.3', 'head', 'jruby-9.4', 'jruby-head']
         gemfile:
           - gemfiles/postgresql/master.gemfile
           - gemfiles/mysql2/master.gemfile
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 1a2f2adf..1a36a779 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -13,7 +13,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        ruby: ['3.1', '3.2', '3.3']
+        ruby: ['3.2', '3.3']
         gemfile:
           - gemfiles/mysql2/7-1.gemfile
           - gemfiles/postgresql/7-1.gemfile
@@ -23,6 +23,10 @@ jobs:
           - gemfiles/postgresql/7-2.gemfile
           - gemfiles/sqlite3/7-2.gemfile
           - gemfiles/trilogy/7-2.gemfile
+          - gemfiles/mysql2/8-0.gemfile
+          - gemfiles/postgresql/8-0.gemfile
+          - gemfiles/sqlite3/8-0.gemfile
+          - gemfiles/trilogy/8-0.gemfile
         ubuntu: ['latest']
         include:
           #
@@ -52,6 +56,30 @@ jobs:
           - ruby: '3.0'
             gemfile: gemfiles/trilogy/7-1.gemfile
             ubuntu: latest
+          - ruby: '3.1'
+            gemfile: gemfiles/mysql2/7-1.gemfile
+            ubuntu: latest
+          - ruby: '3.1'
+            gemfile: gemfiles/postgresql/7-1.gemfile
+            ubuntu: latest
+          - ruby: '3.1'
+            gemfile: gemfiles/sqlite3/7-1.gemfile
+            ubuntu: latest
+          - ruby: '3.1'
+            gemfile: gemfiles/trilogy/7-1.gemfile
+            ubuntu: latest
+          - ruby: '3.1'
+            gemfile: gemfiles/mysql2/7-2.gemfile
+            ubuntu: latest
+          - ruby: '3.1'
+            gemfile: gemfiles/postgresql/7-2.gemfile
+            ubuntu: latest
+          - ruby: '3.1'
+            gemfile: gemfiles/sqlite3/7-2.gemfile
+            ubuntu: latest
+          - ruby: '3.1'
+            gemfile: gemfiles/trilogy/7-2.gemfile
+            ubuntu: latest
 
 
           #
diff --git a/delayed_job_active_record.gemspec b/delayed_job_active_record.gemspec
index 3a340f1d..7fd62fbd 100644
--- a/delayed_job_active_record.gemspec
+++ b/delayed_job_active_record.gemspec
@@ -17,6 +17,6 @@ Gem::Specification.new do |spec|
 
   spec.metadata = { "rubygems_mfa_required" => "true" }
 
-  spec.add_dependency "activerecord", [">= 3.0", "< 8.0"]
+  spec.add_dependency "activerecord", [">= 3.0", "< 9.0"]
   spec.add_dependency "delayed_job",  [">= 3.0", "< 5"]
 end
diff --git a/gemfiles/mysql2/8-0.gemfile b/gemfiles/mysql2/8-0.gemfile
new file mode 100644
index 00000000..2635f697
--- /dev/null
+++ b/gemfiles/mysql2/8-0.gemfile
@@ -0,0 +1,23 @@
+# frozen_string_literal: true
+
+source "https://rubygems.org"
+
+gem "rake"
+
+group :test do
+  platforms :jruby do
+    gem "activerecord-jdbcmysql-adapter"
+  end
+
+  platforms :ruby, :mswin, :mingw do
+    gem "mysql2", "~> 0.5"
+  end
+
+  gem "rspec", ">= 2.11"
+  gem "simplecov", ">= 0.20.0", require: false
+  gem "simplecov-lcov", ">= 0.8.0", require: false
+
+  gem "activerecord", "~> 8.0.0"
+end
+
+gemspec path: "../../"
diff --git a/gemfiles/postgresql/8-0.gemfile b/gemfiles/postgresql/8-0.gemfile
new file mode 100644
index 00000000..a724df08
--- /dev/null
+++ b/gemfiles/postgresql/8-0.gemfile
@@ -0,0 +1,23 @@
+# frozen_string_literal: true
+
+source "https://rubygems.org"
+
+gem "rake"
+
+group :test do
+  platforms :jruby do
+    gem "activerecord-jdbcmysql-adapter"
+  end
+
+  platforms :ruby, :mswin, :mingw do
+    gem "pg", "~> 1.1"
+  end
+
+  gem "rspec", ">= 2.11"
+  gem "simplecov", ">= 0.20.0", require: false
+  gem "simplecov-lcov", ">= 0.8.0", require: false
+
+  gem "activerecord", "~> 8.0.0"
+end
+
+gemspec path: "../../"
diff --git a/gemfiles/sqlite3/8-0.gemfile b/gemfiles/sqlite3/8-0.gemfile
new file mode 100644
index 00000000..c03c7533
--- /dev/null
+++ b/gemfiles/sqlite3/8-0.gemfile
@@ -0,0 +1,23 @@
+# frozen_string_literal: true
+
+source "https://rubygems.org"
+
+gem "rake"
+
+group :test do
+  platforms :jruby do
+    gem "activerecord-jdbcmysql-adapter"
+  end
+
+  platforms :ruby, :mswin, :mingw do
+    gem "sqlite3", ">= 1.4"
+  end
+
+  gem "rspec", ">= 2.11"
+  gem "simplecov", ">= 0.20.0", require: false
+  gem "simplecov-lcov", ">= 0.8.0", require: false
+
+  gem "activerecord", "~> 8.0.0"
+end
+
+gemspec path: "../../"
diff --git a/gemfiles/sqlite3/master.gemfile b/gemfiles/sqlite3/master.gemfile
index ba1d78f7..258c87b7 100644
--- a/gemfiles/sqlite3/master.gemfile
+++ b/gemfiles/sqlite3/master.gemfile
@@ -11,7 +11,7 @@ group :test do
   end
 
   platforms :ruby, :mswin, :mingw do
-    gem "sqlite3", "~> 1.4"
+    gem "sqlite3", ">= 2.1"
   end
 
   gem "rspec", ">= 2.11"
diff --git a/gemfiles/trilogy/8-0.gemfile b/gemfiles/trilogy/8-0.gemfile
new file mode 100644
index 00000000..c4968006
--- /dev/null
+++ b/gemfiles/trilogy/8-0.gemfile
@@ -0,0 +1,19 @@
+# frozen_string_literal: true
+
+source "https://rubygems.org"
+
+gem "rake"
+
+group :test do
+  platforms :ruby, :mswin, :mingw do
+    gem "trilogy", "~> 2.7"
+  end
+
+  gem "rspec", ">= 2.11"
+  gem "simplecov", ">= 0.20.0", require: false
+  gem "simplecov-lcov", ">= 0.8.0", require: false
+
+  gem "activerecord", "~> 8.0.0"
+end
+
+gemspec path: "../../"