diff --git a/CHANGELOG.md b/CHANGELOG.md
index 63a37171..bedc2114 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,6 +6,10 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+## [v4.2.9-2] - 2023-02-21
+### Changed
+- Extract admin creation and deletion scripts (#111)
+
 ## [v4.2.9-1] - 2023-02-14
 ### Changed
 - Upgrade to Redmine 4.2.9; #109
diff --git a/Dockerfile b/Dockerfile
index 1ce61277..5fcf52e2 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -2,7 +2,7 @@
 FROM registry.cloudogu.com/official/base:3.14.3-1
 
 LABEL NAME="official/redmine" \
-   VERSION="4.2.9-1" \
+   VERSION="4.2.9-2" \
    maintainer="hello@cloudogu.com"
 
 # This Dockerfile is based on https://github.com/docker-library/redmine/blob/master/4.0/alpine/Dockerfile
diff --git a/Jenkinsfile b/Jenkinsfile
index 84d0d309..f4d134eb 100644
--- a/Jenkinsfile
+++ b/Jenkinsfile
@@ -43,7 +43,7 @@ node('vagrant') {
         }
 
         stage('Shell-Check') {
-            shellCheck("./resources/startup.sh ./resources/post-upgrade.sh ./resources/pre-upgrade.sh ./resources/util.sh ./resources/upgrade-notification.sh ./resources/create-admin.sh ./resources/default-config.sh ./resources/remove-user.sh ./resources/util.sh ./resources/delete-plugin.sh")
+            shellCheck("./resources/startup.sh ./resources/post-upgrade.sh ./resources/pre-upgrade.sh ./resources/util.sh ./resources/upgrade-notification.sh ./resources/default-config.sh ./resources/util.sh ./resources/delete-plugin.sh")
         }
 
         try {
diff --git a/dogu.json b/dogu.json
index d02c17c0..286bfc15 100644
--- a/dogu.json
+++ b/dogu.json
@@ -1,6 +1,6 @@
 {
   "Name": "official/redmine",
-  "Version": "4.2.9-1",
+  "Version": "4.2.9-2",
   "DisplayName": "Redmine",
   "Description": "Redmine is a flexible project management web application",
   "Category": "Development Apps",
diff --git a/resources/create-admin.sh b/resources/create-admin.sh
deleted file mode 100755
index 07a1c71b..00000000
--- a/resources/create-admin.sh
+++ /dev/null
@@ -1,32 +0,0 @@
-#!/bin/bash
-set -o errexit
-set -o nounset
-set -o pipefail
-
-USERNAME="${1}"
-PASSWORD="${2}"
-
-OUTPUT="$(RAILS_ENV=production bundle exec rails console <<< "
-begin
-  user = User.new(:language => Setting.default_language, :mail_notification => Setting.default_notification_option, :admin => true)
-  user.login = '${USERNAME}'
-  user.password = '${PASSWORD}'
-  user.password_confirmation = '${PASSWORD}'
-  user.lastname = '${USERNAME}'
-  user.firstname = '${USERNAME}'
-  user.mail = '${USERNAME}@${USERNAME}.de'
-  user.save!
-rescue => error
-  puts error.message
-  raise 'User was not saved'
-end
-")"
-
-# There is no way to get an exit code on error. So we check if exception raised text appears and exit manually.
-if [[ "${OUTPUT}" == *"RuntimeError (User was not saved)"* ]]; then
-  echo "Could not create admin ${USERNAME} due to error: "
-  printf '%s\n' "${OUTPUT#*end}"
-  exit 1
-else
-  echo "Created user ${USERNAME} successfully."
-fi
diff --git a/resources/rails_scripts/create_admin.rb b/resources/rails_scripts/create_admin.rb
new file mode 100644
index 00000000..bead90f9
--- /dev/null
+++ b/resources/rails_scripts/create_admin.rb
@@ -0,0 +1,44 @@
+require 'optparse'
+
+module CreateAdminHelper
+  @options = {}
+  OptionParser.new do |opts|
+    opts.banner = "Usage: get_setting.rb [options]"
+
+    opts.on("-u", "--username USERNAME", "username")
+    opts.on("-p", "--password PASSWORD", "password")
+  end.parse!(into: @options)
+
+  @options[:username] = "" if @options[:username].nil?
+
+  def self.options
+    @options
+  end
+
+  class ActiveSupport::HashWithIndifferentAccess
+    def symbolize_keys!
+      transform_keys! { |key| key.to_sym rescue key }
+    end
+  end
+end
+
+begin
+  opts = CreateAdminHelper::options
+  username = opts[:username]
+  password = opts[:password]
+  puts "Try to create user '%s'" % username
+  user = User.new(:language => Setting.default_language, :mail_notification => Setting.default_notification_option, :admin => true)
+  user.login = username
+  user.password = password
+  user.password_confirmation = password
+  user.lastname = username
+  user.firstname = username
+  user.mail = "#{username}@#{username}.de"
+  user.save!
+  puts 'User saved successfully.'
+rescue Exception => error
+  puts '================================================'
+  puts error.message
+  puts '================================================'
+  raise 'User was not saved.'
+end
diff --git a/resources/rails_scripts/remove_user.rb b/resources/rails_scripts/remove_user.rb
new file mode 100644
index 00000000..53233db8
--- /dev/null
+++ b/resources/rails_scripts/remove_user.rb
@@ -0,0 +1,36 @@
+require 'optparse'
+
+module RemoveUserHelper
+@options = {}
+OptionParser.new do |opts|
+opts.banner = "Usage: get_setting.rb [options]"
+
+opts.on("-u", "--username USERNAME", "username")
+end.parse!(into: @options)
+
+@options[:username] = "" if @options[:username].nil?
+
+    def self.options
+@options
+end
+
+class ActiveSupport::HashWithIndifferentAccess
+def symbolize_keys!
+transform_keys! { |key| key.to_sym rescue key }
+end
+end
+end
+
+begin
+opts = RemoveUserHelper::options
+puts "Try to remove user %s" % opts[:username]
+user = User.where(login: opts[:username]).first
+puts 'User did not exist' if user.nil?
+    user.destroy unless user.nil?
+    puts 'User removed successfully.' unless user.nil?
+    rescue Exception => error
+puts '====================================================='
+puts error.message
+puts '====================================================='
+puts 'User remove failed.'
+end
\ No newline at end of file
diff --git a/resources/util.sh b/resources/util.sh
index 24d56797..cf91955f 100644
--- a/resources/util.sh
+++ b/resources/util.sh
@@ -157,7 +157,7 @@ function start_redmine_in_background(){
   wait_for_redmine_to_get_healthy 300
 }
 
-# Creates an admin user by using the create-admin.sh script
+# Creates an admin user by using the create_admin.rb script
 function create_temporary_admin() {
   echo "Creating temporary admin..."
   # The Password must contain a special character, a lowercase letter, a capital letter and a number...
@@ -170,8 +170,7 @@ function create_temporary_admin() {
   # In case we are in restart loop to prevent infinite admin users...
   remove_last_temporary_admin
 
-  # shellcheck disable=SC1091
-  source "/create-admin.sh" "${TMP_ADMIN_NAME}" "${TMP_ADMIN_PASSWORD}"
+  railsConsole "/rails_scripts/create_admin.rb" --username "${TMP_ADMIN_NAME}" --password "${TMP_ADMIN_PASSWORD}" || exit 1
   doguctl config -e "last_tmp_admin" "${TMP_ADMIN_NAME}"
 }
 
@@ -188,7 +187,7 @@ function remove_last_temporary_admin() {
   then
     echo "Removing last temporary admin..."
     # shellcheck disable=SC1091
-    source "/remove-user.sh" "${LAST_TMP_ADMIN}"
+    railsConsole "/rails_scripts/remove_user.rb" --username "${LAST_TMP_ADMIN}" || exit 1
     doguctl config --rm last_tmp_admin
   fi
 }