diff --git a/.github/workflows/deploy.yml b/.github/workflows/deploy.yml
index f5daa27310..ffc961b558 100644
--- a/.github/workflows/deploy.yml
+++ b/.github/workflows/deploy.yml
@@ -110,8 +110,6 @@ jobs:
           rm -rf $GITHUB_WORKSPACE/.php_cs.dist
           rm -rf $GITHUB_WORKSPACE/phpunit.xml.dist
           rm -rf $GITHUB_WORKSPACE/phpstan.neon.dist
-          rm -rf $GITHUB_WORKSPACE/app.json
-          rm -rf $GITHUB_WORKSPACE/Procfile
           rm -rf $GITHUB_WORKSPACE/build.xml
           rm -rf $GITHUB_WORKSPACE/README.md
           rm -rf $GITHUB_WORKSPACE/php.ini
@@ -119,7 +117,6 @@ jobs:
           rm -rf $GITHUB_WORKSPACE/phpinidel.sh
           rm -rf $GITHUB_WORKSPACE/*.phar
           rm -rf $GITHUB_WORKSPACE/setup.sh
-          rm -rf $GITHUB_WORKSPACE/setup_heroku.php
           rm -rf $GITHUB_WORKSPACE/svn_propset.sh
           rm -rf $GITHUB_WORKSPACE/playwright*
           rm -rf $GITHUB_WORKSPACE/e2e-tests
diff --git a/Procfile b/Procfile
deleted file mode 100644
index ed0af073d6..0000000000
--- a/Procfile
+++ /dev/null
@@ -1 +0,0 @@
-web: $(composer config bin-dir)/heroku-php-apache2 html/
diff --git a/README.md b/README.md
index 36eba05c20..938482f6d7 100644
--- a/README.md
+++ b/README.md
@@ -4,7 +4,6 @@
 [![codecov](https://codecov.io/gh/EC-CUBE/ec-cube2/branch/master/graph/badge.svg?token=4oNLGhIQwy)](https://codecov.io/gh/EC-CUBE/ec-cube2)
 [![PHP Versions Supported](https://img.shields.io/badge/php-%3E%3D%205.4-8892BF.svg)](#php-version-support)
 [![GitHub All Releases](https://img.shields.io/github/downloads/EC-CUBE/ec-cube2/total)](https://github.com/EC-CUBE/ec-cube2/releases)
-[![Deploy](https://www.herokucdn.com/deploy/button.png)](https://heroku.com/deploy)
 
 ---
 
diff --git a/app.json b/app.json
deleted file mode 100644
index 1f581152ef..0000000000
--- a/app.json
+++ /dev/null
@@ -1,26 +0,0 @@
-{
-    "name": "EC-CUBE2",
-    "description": "EC-CUBE2 on Heroku",
-    "website": "https://github.com/EC-CUBE/ec-cube2",
-    "repository": "https://github.com/EC-CUBE/ec-cube2",
-    "keywords": ["php", "ec", "e-commerce", "ec-cube"],
-    "scripts": {
-        "postdeploy": "php ./setup_heroku.php"
-    },
-    "env": {
-        "HEROKU_APP_NAME": {"required": true }
-    },
-    "addons": [
-        {
-            "plan": "heroku-postgresql",
-            "options": {
-                "version": "9.6"
-            }
-        }
-    ],
-    "buildpacks": [
-        {
-            "url": "heroku/php"
-        }
-    ]
-}
diff --git a/setup_heroku.php b/setup_heroku.php
deleted file mode 100644
index 527b1b9181..0000000000
--- a/setup_heroku.php
+++ /dev/null
@@ -1,28 +0,0 @@
-<?php
-$url = parse_url(getenv('DATABASE_URL'));
-
-$stdout= fopen('php://stdout', 'w');
-fwrite( $stdout, print_r($url)."\n" );
-
-$cmd = 'export DBSERVER="'.$url['host'].'";';
-$cmd .= 'export DBUSER="'.$url['user'].'";';
-$cmd .= 'export DBPASS="'.$url['pass'].'";';
-$cmd .= 'export DBNAME="'.substr($url['path'], 1).'";';
-
-$app = getenv('HEROKU_APP_NAME');
-$cmd .= 'export HTTP_URL="http://'.$app.'.herokuapp.com/";';
-$cmd .= 'export HTTPS_URL="https://'.$app.'.herokuapp.com/";';
-
-$cmd .= ' sh ./eccube_install.sh heroku';
-
-$stdout= fopen('php://stdout', 'w');
-fwrite( $stdout, $cmd."\n" );
-
-echo "<pre>".shell_exec($cmd)."</pre>";
-
-// sql
-$dsn = sprintf('pgsql:host=%s;dbname=%s', $url['host'], substr($url['path'], 1));
-$pdo = new PDO($dsn, $url['user'], $url['pass']);
-$sql = "UPDATE mtb_constants SET name = 'true' WHERE id = 'DEBUG_MODE'";
-$count = $pdo->exec($sql);
-echo "{$count}件データを更新しました。".PHP_EOL;