diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 69336b5..efdd5e8 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -39,6 +39,7 @@ jobs:
           - '3.1'
           - '3.0'
           - '2.7'
+          - '3.3'
           - 'truffleruby'
         rails:
           - activerecord_7.1
diff --git a/lib/with_advisory_lock/base.rb b/lib/with_advisory_lock/base.rb
index 197f4d4..35e5d2b 100644
--- a/lib/with_advisory_lock/base.rb
+++ b/lib/with_advisory_lock/base.rb
@@ -56,7 +56,9 @@ def already_locked?
     def with_advisory_lock_if_needed(&block)
       if disable_query_cache
         return lock_and_yield do
-          ActiveRecord::Base.uncached(&block)
+          connection.uncached do
+            yield
+          end
         end
       end
 
diff --git a/test/test_helper.rb b/test/test_helper.rb
index 2a8c43f..14b0d01 100644
--- a/test/test_helper.rb
+++ b/test/test_helper.rb
@@ -17,7 +17,7 @@
 
 ActiveRecord::Base.configurations = {
   default_env: {
-    url: ENV.fetch('DATABASE_URL', "sqlite3://#{Dir.tmpdir}/#{SecureRandom.hex}.sqlite3"),
+    url: ENV.fetch('DATABASE_URL', "sqlite3://#{Dir.tmpdir}/with_advisory_lock_test#{RUBY_VERSION}-#{ActiveRecord.gem_version}.sqlite3"),
     properties: { allowPublicKeyRetrieval: true } # for JRuby madness
   }
 }
@@ -38,14 +38,24 @@ def env_db
 require 'mocha/minitest'
 
 class GemTestCase < ActiveSupport::TestCase
+
+  parallelize(workers: 1)
+  def adapter_support
+    @adapter_support ||= WithAdvisoryLock::DatabaseAdapterSupport.new(ActiveRecord::Base.connection)
+  end
+  def is_sqlite3_adapter?; adapter_support.sqlite?; end
+  def is_mysql_adapter?; adapter_support.mysql?; end
+  def is_postgresql_adapter?; adapter_support.postgresql?; end
+
   setup do
-    ENV['FLOCK_DIR'] = Dir.mktmpdir
+    ENV['FLOCK_DIR'] = Dir.mktmpdir if is_sqlite3_adapter?
     Tag.delete_all
     TagAudit.delete_all
     Label.delete_all
   end
+
   teardown do
-    FileUtils.remove_entry_secure ENV['FLOCK_DIR']
+    FileUtils.remove_entry_secure(ENV['FLOCK_DIR'], true) if is_sqlite3_adapter?
   end
 end
 
diff --git a/test/test_models.rb b/test/test_models.rb
index 016be2e..8d6fda1 100644
--- a/test/test_models.rb
+++ b/test/test_models.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-ActiveRecord::Schema.define(version: 0) do
+ActiveRecord::Schema.define(version: 1) do
   create_table 'tags', force: true do |t|
     t.string 'name'
   end
@@ -12,15 +12,19 @@
   end
 end
 
-class Tag < ActiveRecord::Base
+class ApplicationRecord < ActiveRecord::Base
+  self.abstract_class = true
+end
+
+class Tag < ApplicationRecord
   after_save do
     TagAudit.create(tag_name: name)
     Label.create(name: name)
   end
 end
 
-class TagAudit < ActiveRecord::Base
+class TagAudit < ApplicationRecord
 end
 
-class Label < ActiveRecord::Base
+class Label < ApplicationRecord
 end
diff --git a/test/concern_test.rb b/test/with_advisory_lock/concern_test.rb
similarity index 90%
rename from test/concern_test.rb
rename to test/with_advisory_lock/concern_test.rb
index 1299b3a..7e5f79c 100644
--- a/test/concern_test.rb
+++ b/test/with_advisory_lock/concern_test.rb
@@ -22,12 +22,12 @@ class WithAdvisoryLockConcernTest < GemTestCase
 
 class ActiveRecordQueryCacheTest < GemTestCase
   test 'does not disable quary cache by default' do
-    ActiveRecord::Base.expects(:uncached).never
+    Tag.connection.expects(:uncached).never
     Tag.with_advisory_lock('lock') { Tag.first }
   end
 
   test 'can disable ActiveRecord query cache' do
-    ActiveRecord::Base.expects(:uncached).once
+    Tag.connection.expects(:uncached).once
     Tag.with_advisory_lock('a-lock', disable_query_cache: true) { Tag.first }
   end
 end
diff --git a/test/lock_test.rb b/test/with_advisory_lock/lock_test.rb
similarity index 100%
rename from test/lock_test.rb
rename to test/with_advisory_lock/lock_test.rb
diff --git a/test/nesting_test.rb b/test/with_advisory_lock/nesting_test.rb
similarity index 100%
rename from test/nesting_test.rb
rename to test/with_advisory_lock/nesting_test.rb
diff --git a/test/options_test.rb b/test/with_advisory_lock/options_test.rb
similarity index 100%
rename from test/options_test.rb
rename to test/with_advisory_lock/options_test.rb
diff --git a/test/parallelism_test.rb b/test/with_advisory_lock/parallelism_test.rb
similarity index 93%
rename from test/parallelism_test.rb
rename to test/with_advisory_lock/parallelism_test.rb
index d8eb688..56f6a20 100644
--- a/test/parallelism_test.rb
+++ b/test/with_advisory_lock/parallelism_test.rb
@@ -15,7 +15,7 @@ def initialize(name, use_advisory_lock)
 
   def work_later
     sleep
-    ActiveRecord::Base.connection_pool.with_connection do
+    ApplicationRecord.connection_pool.with_connection do
       if @use_advisory_lock
         Tag.with_advisory_lock(@name) { work }
       else
@@ -46,11 +46,11 @@ def run_workers
       workers.each(&:join)
     end
     # Ensure we're still connected:
-    ActiveRecord::Base.connection_pool.connection
+    ApplicationRecord.connection_pool.connection
   end
 
   setup do
-    ActiveRecord::Base.connection.reconnect!
+    ApplicationRecord.connection.reconnect!
     @workers = 10
   end
 
diff --git a/test/shared_test.rb b/test/with_advisory_lock/shared_test.rb
similarity index 94%
rename from test/shared_test.rb
rename to test/with_advisory_lock/shared_test.rb
index 83a0c1d..7cd23a4 100644
--- a/test/shared_test.rb
+++ b/test/with_advisory_lock/shared_test.rb
@@ -24,7 +24,7 @@ def cleanup!
   private
 
   def work
-    ActiveRecord::Base.connection_pool.with_connection do
+    ApplicationRecord.connection_pool.with_connection do
       Tag.with_advisory_lock('test', timeout_seconds: 0, shared: @shared) do
         @locked = true
         sleep 0.01 until @cleanup
@@ -117,7 +117,7 @@ class PostgreSQLTest < SupportedEnvironmentTest
     end
 
     def pg_lock_modes
-      ActiveRecord::Base.connection.select_values("SELECT mode FROM pg_locks WHERE locktype = 'advisory';")
+      ApplicationRecord.connection.select_values("SELECT mode FROM pg_locks WHERE locktype = 'advisory';")
     end
 
     test 'allows shared lock to be upgraded to an exclusive lock' do
diff --git a/test/thread_test.rb b/test/with_advisory_lock/thread_test.rb
similarity index 93%
rename from test/thread_test.rb
rename to test/with_advisory_lock/thread_test.rb
index e4156bf..2c86be0 100644
--- a/test/thread_test.rb
+++ b/test/with_advisory_lock/thread_test.rb
@@ -10,7 +10,7 @@ class SeparateThreadTest < GemTestCase
     @t1_return_value = nil
 
     @t1 = Thread.new do
-      ActiveRecord::Base.connection_pool.with_connection do
+      ApplicationRecord.connection_pool.with_connection do
         @t1_return_value = Label.with_advisory_lock(@lock_name) do
           @mutex.synchronize { @t1_acquired_lock = true }
           sleep
@@ -21,7 +21,7 @@ class SeparateThreadTest < GemTestCase
 
     # Wait for the thread to acquire the lock:
     sleep(0.1) until @mutex.synchronize { @t1_acquired_lock }
-    ActiveRecord::Base.connection.reconnect!
+    ApplicationRecord.connection.reconnect!
   end
 
   teardown do
diff --git a/test/transaction_test.rb b/test/with_advisory_lock/transaction_test.rb
similarity index 94%
rename from test/transaction_test.rb
rename to test/with_advisory_lock/transaction_test.rb
index e7d951b..559f55c 100644
--- a/test/transaction_test.rb
+++ b/test/with_advisory_lock/transaction_test.rb
@@ -25,7 +25,7 @@ class PostgresqlTest < TransactionScopingTest
     setup do
       skip unless env_db == :postgresql
       @pg_lock_count = lambda do
-        ActiveRecord::Base.connection.select_value("SELECT COUNT(*) FROM pg_locks WHERE locktype = 'advisory';").to_i
+        ApplicationRecord.connection.select_value("SELECT COUNT(*) FROM pg_locks WHERE locktype = 'advisory';").to_i
       end
     end