diff --git a/.github/workflows/test.yaml b/.github/workflows/test.yaml
index 38cbac6..6446d48 100644
--- a/.github/workflows/test.yaml
+++ b/.github/workflows/test.yaml
@@ -99,6 +99,11 @@ jobs:
             gemfile: "gems/pitchfork-head-rack-v2.rb"
             server: "pitchfork -E none"
             endpoint: "http://localhost:8080"
+          - ruby: "3.3"
+            name: "Pitchfork-head-Rack-v3-http"
+            gemfile: "gems/pitchfork-head-rack-v3.rb"
+            server: "pitchfork -E none"
+            endpoint: "http://localhost:8080"
     
     steps:
     - uses: actions/checkout@v3
diff --git a/gems/pitchfork-head-rack-v3.rb b/gems/pitchfork-head-rack-v3.rb
new file mode 100644
index 0000000..2b3580b
--- /dev/null
+++ b/gems/pitchfork-head-rack-v3.rb
@@ -0,0 +1,12 @@
+# frozen_string_literal: true
+
+# Released under the MIT License.
+# Copyright, 2024, by Samuel Williams.
+
+eval_gemfile '../gems.rb'
+
+gem "pitchfork", git: "https://github.com/Shopify/pitchfork.git"
+gem "rack", "~> 3.0"
+
+# export RACK_CONFORM_SERVER="pitchfork -E none"
+# export RACK_CONFORM_ENDPOINT="http://localhost:8080"
diff --git a/lib/rack/conform/application.rb b/lib/rack/conform/application.rb
index 715bc55..8e925f6 100644
--- a/lib/rack/conform/application.rb
+++ b/lib/rack/conform/application.rb
@@ -104,7 +104,7 @@ def test_websocket_echo(env)
 						connection.write(message)
 					end
 					connection.close
-				end or Protocol::HTTP::Response[404, {}, []]
+				end or [404, {}, []]
 			end
 
 			def test_middleware_body_itself(env)