diff --git a/Gemfile b/Gemfile
index 51d5372..c7ae7fc 100644
--- a/Gemfile
+++ b/Gemfile
@@ -4,6 +4,7 @@ source "https://rubygems.org"
 
 gemspec
 
+gem "activerecord"
 gem "bigdecimal"
 gem "irb"
 gem "rake"
diff --git a/Gemfile.lock b/Gemfile.lock
index a8f1d64..92136fa 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -7,19 +7,44 @@ PATH
 GEM
   remote: https://rubygems.org/
   specs:
+    activemodel (8.1.3)
+      activesupport (= 8.1.3)
+    activerecord (8.1.3)
+      activemodel (= 8.1.3)
+      activesupport (= 8.1.3)
+      timeout (>= 0.4.0)
+    activesupport (8.1.3)
+      base64
+      bigdecimal
+      concurrent-ruby (~> 1.0, >= 1.3.1)
+      connection_pool (>= 2.2.5)
+      drb
+      i18n (>= 1.6, < 2)
+      json
+      logger (>= 1.4.2)
+      minitest (>= 5.1)
+      securerandom (>= 0.3)
+      tzinfo (~> 2.0, >= 2.0.5)
+      uri (>= 0.13.1)
     ast (2.4.3)
+    base64 (0.3.0)
     bigdecimal (4.1.2)
     concurrent-ruby (1.3.6)
+    connection_pool (3.0.2)
     date (3.5.1)
     diff-lcs (2.0.0)
     drb (2.2.3)
     erb (6.0.4)
+    i18n (1.14.8)
+      concurrent-ruby (~> 1.0)
     io-console (0.8.2)
     irb (1.18.0)
       pp (>= 0.6.0)
       prism (>= 1.3.0)
       rdoc (>= 4.0.0)
       reline (>= 0.4.2)
+    json (2.19.4)
+    logger (1.7.0)
     m (1.7.0)
       rake
     minitest (6.0.5)
@@ -76,11 +101,15 @@ GEM
     stringio (3.2.0)
     syntax_tree (6.3.0)
       prettier_print (>= 1.2.0)
+    timeout (0.6.1)
     tsort (0.2.0)
+    tzinfo (2.0.6)
+      concurrent-ruby (~> 1.0)
     unparser (0.9.0)
       diff-lcs (>= 1.6, < 3)
       parser (>= 3.3.0)
       prism (>= 1.5.1)
+    uri (1.1.1)
 
 PLATFORMS
   aarch64-linux
@@ -88,6 +117,7 @@ PLATFORMS
   x86_64-linux
 
 DEPENDENCIES
+  activerecord
   bigdecimal
   concurrent-ruby
   en57!
@@ -102,16 +132,24 @@ DEPENDENCIES
   syntax_tree
 
 CHECKSUMS
+  activemodel (8.1.3) sha256=90c05cbe4cef3649b8f79f13016191ea94c4525ce4a5c0fb7ef909c4b91c8219
+  activerecord (8.1.3) sha256=8003be7b2466ba0a2a670e603eeb0a61dd66058fccecfc49901e775260ac70ab
+  activesupport (8.1.3) sha256=21a5e0dfbd4c3ddd9e1317ec6a4d782fa226e7867dc70b0743acda81a1dca20e
   ast (2.4.3) sha256=954615157c1d6a382bc27d690d973195e79db7f55e9765ac7c481c60bdb4d383
+  base64 (0.3.0) sha256=27337aeabad6ffae05c265c450490628ef3ebd4b67be58257393227588f5a97b
   bigdecimal (4.1.2) sha256=53d217666027eab4280346fba98e7d5b66baaae1b9c3c1c0ffe89d48188a3fbd
   concurrent-ruby (1.3.6) sha256=6b56837e1e7e5292f9864f34b69c5a2cbc75c0cf5338f1ce9903d10fa762d5ab
+  connection_pool (3.0.2) sha256=33fff5ba71a12d2aa26cb72b1db8bba2a1a01823559fb01d29eb74c286e62e0a
   date (3.5.1) sha256=750d06384d7b9c15d562c76291407d89e368dda4d4fff957eb94962d325a0dc0
   diff-lcs (2.0.0) sha256=708a5d52ec2945b50f8f53a181174aa1ef2c496edf81c05957fe956dabb363d5
   drb (2.2.3) sha256=0b00d6fdb50995fe4a45dea13663493c841112e4068656854646f418fda13373
   en57 (0.1.0)
   erb (6.0.4) sha256=38e3803694be357fe2bfe312487c74beaf9fb4e5beb3e22498952fe1645b95d9
+  i18n (1.14.8) sha256=285778639134865c5e0f6269e0b818256017e8cde89993fdfcbfb64d088824a5
   io-console (0.8.2) sha256=d6e3ae7a7cc7574f4b8893b4fca2162e57a825b223a177b7afa236c5ef9814cc
   irb (1.18.0) sha256=de9454a0703a54704b9811a5ef31a60c86949fbf4013fcf244fabc7c775248e3
+  json (2.19.4) sha256=670a7d333fb3b18ca5b29cb255eb7bef099e40d88c02c80bd42a3f30fe5239ac
+  logger (1.7.0) sha256=196edec7cc44b66cfb40f9755ce11b392f21f7967696af15d274dde7edff0203
   m (1.7.0) sha256=058f793da8150c51353cc59366ffae7774683e868bede3c78f81d920fb9d633a
   minitest (6.0.5) sha256=f007d7246bf4feea549502842cd7c6aba8851cdc9c90ba06de9c476c0d01155c
   minitest-mock (5.27.0) sha256=7040ed7185417a966920987eaa6eaf1be4ea1fc5b25bb03ff4703f98564a55b0
@@ -141,8 +179,11 @@ CHECKSUMS
   sorbet-runtime (0.6.13164) sha256=4561933ac3be0b2477c146540be8e8a3a8b23971ef46cfc89f5d45272830a651
   stringio (3.2.0) sha256=c37cb2e58b4ffbd33fe5cd948c05934af997b36e0b6ca6fdf43afa234cf222e1
   syntax_tree (6.3.0) sha256=56e25a9692c798ec94c5442fe94c5e94af76bef91edc8bb02052cbdecf35f13d
+  timeout (0.6.1) sha256=78f57368a7e7bbadec56971f78a3f5ecbcfb59b7fcbb0a3ed6ddc08a5094accb
   tsort (0.2.0) sha256=9650a793f6859a43b6641671278f79cfead60ac714148aabe4e3f0060480089f
+  tzinfo (2.0.6) sha256=8daf828cc77bcf7d63b0e3bdb6caa47e2272dcfaf4fbfe46f8c3a9df087a829b
   unparser (0.9.0) sha256=4331f174a73a23b69250b13d47da3794ed1449711ee0f9ed8947dc020ba76067
+  uri (1.1.1) sha256=379fa58d27ffb1387eaada68c749d1426738bd0f654d812fcc07e7568f5c57c6
 
 BUNDLED WITH
   4.0.10
diff --git a/lib/en57.rb b/lib/en57.rb
index e5dc747..4113a62 100644
--- a/lib/en57.rb
+++ b/lib/en57.rb
@@ -7,6 +7,7 @@ require_relative "en57/query"
 require_relative "en57/scope"
 require_relative "en57/pg_adapter"
 require_relative "en57/sequel_adapter"
+require_relative "en57/active_record_adapter"
 require_relative "en57/repository"
 require_relative "en57/event_store"
 
diff --git a/lib/en57/active_record_adapter.rb b/lib/en57/active_record_adapter.rb
new file mode 100644
index 0000000..0ce0578
--- /dev/null
+++ b/lib/en57/active_record_adapter.rb
@@ -0,0 +1,23 @@
+# frozen_string_literal: true
+
+module En57
+  class ActiveRecordAdapter
+    def initialize(connection_pool)
+      @connection_pool = connection_pool
+    end
+
+    def with_connection
+      @connection_pool.with_connection do |connection|
+        yield connection.raw_connection
+      end
+    end
+
+    def with_serializable_transaction
+      @connection_pool.with_connection do |connection|
+        connection.transaction(isolation: :serializable) do
+          yield connection.raw_connection
+        end
+      end
+    end
+  end
+end
diff --git a/test/test_active_record_adapter.rb b/test/test_active_record_adapter.rb
new file mode 100644
index 0000000..9987747
--- /dev/null
+++ b/test/test_active_record_adapter.rb
@@ -0,0 +1,96 @@
+# frozen_string_literal: true
+
+require "test_helper"
+
+module En57
+  class TestActiveRecordAdapter < Minitest::Test
+    cover ActiveRecordAdapter
+
+    def test_with_connection_checks_out_connection_and_yields_raw_connection
+      with_mock_adapter do |pool, connection, raw_connection, adapter|
+        pool.expect(:with_connection, :selected) do |&block|
+          block.call(connection)
+          true
+        end
+        connection.expect(:raw_connection, raw_connection)
+        raw_connection.expect(:exec, :selected, ["SELECT 1"])
+
+        assert_equal :selected,
+                     adapter.with_connection { |conn| conn.exec("SELECT 1") }
+      end
+    end
+
+    def test_with_serializable_transaction_wraps_block_in_transaction
+      with_mock_adapter do |pool, connection, raw_connection, adapter|
+        pool.expect(:with_connection, :committed) do |&block|
+          block.call(connection)
+          true
+        end
+        connection.expect(:transaction, :committed) do |options, &block|
+          assert_equal({ isolation: :serializable }, options)
+          block.call
+          true
+        end
+        connection.expect(:raw_connection, raw_connection)
+        raw_connection.expect(
+          :exec_params,
+          :written,
+          ["SELECT append_events()", []],
+        )
+
+        assert_equal(
+          :committed,
+          adapter.with_serializable_transaction do |conn|
+            assert_equal :written,
+                         conn.exec_params("SELECT append_events()", [])
+          end,
+        )
+      end
+    end
+
+    def test_with_serializable_transaction_reraises_block_errors
+      error = RuntimeError.new("boom")
+
+      raised =
+        assert_raises(RuntimeError) do
+          with_mock_adapter do |pool, connection, raw_connection, adapter|
+            pool.expect(:with_connection, nil) do |&block|
+              block.call(connection)
+              true
+            end
+            connection.expect(:transaction, nil) do |options, &block|
+              assert_equal({ isolation: :serializable }, options)
+              block.call
+              true
+            end
+            connection.expect(:raw_connection, raw_connection)
+            raw_connection.expect(:exec_params, nil) do |sql, params|
+              assert_equal "SELECT append_events()", sql
+              assert_equal [], params
+              raise error
+            end
+
+            adapter.with_serializable_transaction do |conn|
+              conn.exec_params("SELECT append_events()", [])
+            end
+          end
+        end
+
+      assert_same error, raised
+    end
+
+    private
+
+    def with_mock_adapter
+      pool = Minitest::Mock.new
+      connection = Minitest::Mock.new
+      raw_connection = Minitest::Mock.new
+
+      yield pool, connection, raw_connection, ActiveRecordAdapter.new(pool)
+    ensure
+      pool.verify
+      connection.verify
+      raw_connection.verify
+    end
+  end
+end
diff --git a/test/test_helper.rb b/test/test_helper.rb
index 1e6e60c..5893b6a 100644
--- a/test/test_helper.rb
+++ b/test/test_helper.rb
@@ -9,21 +9,26 @@ require "securerandom"
 require "concurrent-ruby"
 require "pg_ephemeral"
 require "sequel"
+require "active_record"
 
 module En57
   class IntegrationTest < Minitest::Test
     SERVER = PgEphemeral.start
     CONNECTION = PG.connect(SERVER.url)
     SEQUEL_DB = Sequel.connect(SERVER.url)
+    ActiveRecord::Base.establish_connection(SERVER.url)
+    AR_POOL = ActiveRecord::Base.connection_pool
     ADAPTERS = {
       pg: -> { PgAdapter.new(SERVER.url) },
       sequel: -> { SequelAdapter.new(SEQUEL_DB) },
+      active_record: -> { ActiveRecordAdapter.new(AR_POOL) },
     }
 
     def setup =
       CONNECTION.exec("TRUNCATE TABLE tags, events RESTART IDENTITY CASCADE")
 
     Minitest.after_run do
+      ActiveRecord::Base.connection_pool.disconnect!
       SEQUEL_DB.disconnect
       CONNECTION.close
       SERVER.shutdown