diff --git a/.ahoy.yml b/.ahoy.yml
index eb127f5..f51cdc1 100644
--- a/.ahoy.yml
+++ b/.ahoy.yml
@@ -8,35 +8,43 @@ commands:
   build:
     usage: Build or rebuild the project.
     cmd: |
-      ahoy build-codebase
-      ahoy start-server
+      ahoy assemble
+      ahoy start
       ahoy provision
 
-  build-codebase:
-    usage: Build the codebase.
-    cmd: ./.devtools/build-codebase.sh
+  assemble:
+    usage: Assemble a codebase using project code and all required dependencies.
+    cmd: ./.devtools/assemble.sh
 
-  start-server:
-    usage: Start built-in PHP-server.
-    cmd: ./.devtools/start-server.sh
+  start:
+    usage: Start development environment.
+    cmd: ./.devtools/start.sh
 
   provision:
-    usage: Provision a website.
+    usage: Provision application within assembled codebase.
     cmd: ./.devtools/provision.sh
 
+  drush:
+    usage: Run Drush command.
+    cmd: build/vendor/bin/drush -l http://${WEBSERVER_HOST:-localhost}:${WEBSERVER_PORT:-8000} $*
+
+  login:
+    usage: Login to a website.
+    cmd: ahoy drush uli
+
   lint:
-    usage: Lint code.
+    usage: Check coding standards for violations.
     cmd: |
       pushd "build" >/dev/null || exit 1
       vendor/bin/phpcs
       vendor/bin/phpstan
       vendor/bin/rector --clear-cache --dry-run
       vendor/bin/phpmd . text phpmd.xml
-      vendor/bin/twigcs
+      vendor/bin/twig-cs-fixer
       popd >/dev/null || exit 1
 
   lint-fix:
-    usage: Fix coding standards.
+    usage: Fix violations in coding standards.
     cmd: |
       pushd "build" >/dev/null || exit 1
       vendor/bin/rector --clear-cache
@@ -44,7 +52,7 @@ commands:
       popd >/dev/null || exit 1
 
   test:
-    usage: Run all tests.
+    usage: Run tests.
     cmd: |
       pushd "build" >/dev/null || exit 1
       vendor/bin/phpunit
@@ -71,6 +79,14 @@ commands:
       vendor/bin/phpunit --testsuite functional
       popd >/dev/null || exit 1
 
+  reset:
+    usage: Reset project to the default state.
+    cmd: |
+      killall -9 php >/dev/null 2>&1 || true
+      chmod -Rf 777 build > /dev/null
+      rm -Rf build > /dev/null || true
+      rm -Rf .logs > /dev/null || true
+
 # Override entrypoint to alter default behaviour of Ahoy.
 entrypoint:
   - bash
diff --git a/.circleci/config.yml b/.circleci/config.yml
index 79e099a..b98d945 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -21,11 +21,11 @@ job-test: &job-test
 
     - run:
         name: Build the codebase
-        command: .devtools/build-codebase.sh
+        command: .devtools/assemble.sh
 
     - run:
         name: Start built-in PHP server
-        command: .devtools/start-server.sh
+        command: .devtools/start.sh
 
     - run:
         name: Provision site
@@ -52,8 +52,8 @@ job-test: &job-test
         working_directory: build
 
     - run:
-        name: Lint code with Twigcs
-        command: vendor/bin/twigcs || [ "${CI_TWIGCS_IGNORE_FAILURE:-0}" -eq 1 ]
+        name: Lint code with Twig CS Fixer
+        command: vendor/bin/twig-cs-fixer || [ "${CI_TWIGCSFIXER_IGNORE_FAILURE:-0}" -eq 1 ]
         working_directory: build
 
     - run:
@@ -88,8 +88,7 @@ jobs:
     docker:
       - image: cimg/php:8.2-browsers
     environment:
-      DRUPAL_VERSION: 9.5
-      DRUPAL_PROJECT_SHA: 9.x
+      DRUPAL_VERSION: 10.1
     <<: *job-test
 
   test-php-8.2-next:
diff --git a/.devtools/README.nd b/.devtools/README.nd
new file mode 100644
index 0000000..59e2745
--- /dev/null
+++ b/.devtools/README.nd
@@ -0,0 +1,3 @@
+This directory contains scripts used for development.
+
+These can be used locally and in the CI environment.
diff --git a/.devtools/README.txt b/.devtools/README.txt
deleted file mode 100644
index cdda9a5..0000000
--- a/.devtools/README.txt
+++ /dev/null
@@ -1,3 +0,0 @@
-This directory contains development tools to help with building and testing.
-
-These can be used locally and in the CI environment.
diff --git a/.devtools/build-codebase.sh b/.devtools/assemble.sh
similarity index 92%
rename from .devtools/build-codebase.sh
rename to .devtools/assemble.sh
index 54a6b26..8944e92 100755
--- a/.devtools/build-codebase.sh
+++ b/.devtools/assemble.sh
@@ -1,6 +1,6 @@
 #!/usr/bin/env bash
 ##
-# Build the codebase.
+# Assemble a codebase using project code and all required dependencies.
 #
 # Allows to use the latest Drupal core as well as specified versions (for
 # testing backward compatibility).
@@ -37,9 +37,10 @@ DRUPAL_PROJECT_REPO="${DRUPAL_PROJECT_REPO:-https://github.com/drupal-composer/d
 
 #-------------------------------------------------------------------------------
 
-echo "-------------------------------"
-echo "         Build codebase        "
-echo "-------------------------------"
+echo "==============================="
+echo "         🏗️ ASSEMBLE           "
+echo "==============================="
+echo
 
 # Make sure Composer doesn't run out of memory.
 export COMPOSER_MEMORY_LIMIT=-1
@@ -107,7 +108,7 @@ for composer_suggest in $composer_suggests; do
 done
 
 echo "> Copy tools configuration files."
-cp phpcs.xml phpstan.neon phpmd.xml rector.php .twig_cs.php phpunit.xml "build/"
+cp phpcs.xml phpstan.neon phpmd.xml rector.php .twig-cs-fixer.php phpunit.xml "build/"
 
 echo "> Symlink extension's code."
 rm -rf "build/web/${type}/custom" >/dev/null && mkdir -p "build/web/${type}/custom/${extension}"
@@ -126,11 +127,11 @@ if [ -f "build/web/${type}/custom/${extension}/package-lock.json" ]; then
 fi
 
 echo
-echo "-------------------------------"
-echo "        Codebase built 🚀      "
-echo "-------------------------------"
+echo "==============================="
+echo "     🏗 ASSEMBLE COMPLETE      "
+echo "==============================="
 echo
 echo "> Next steps:"
-echo "  .devtools/start-server.sh # Start the webserver"
+echo "  .devtools/start.sh # Start the webserver"
 echo "  .devtools/provision.sh    # Provision the website"
 echo
diff --git a/.devtools/deploy.sh b/.devtools/deploy.sh
index f059abc..40b8a8b 100755
--- a/.devtools/deploy.sh
+++ b/.devtools/deploy.sh
@@ -76,9 +76,10 @@ if [ -n "${DEPLOY_SSH_KEY_FINGERPRINT}" ]; then
   ssh-add -l
 fi
 
-echo "-------------------------------"
-echo "          Deploy code          "
-echo "-------------------------------"
+echo "==============================="
+echo "           🚚 DEPLOY           "
+echo "==============================="
+echo
 
 [ -z "${DEPLOY_USER_NAME}" ] && echo "ERROR: Missing required value for DEPLOY_USER_NAME" && exit 1
 [ -z "${DEPLOY_USER_EMAIL}" ] && echo "ERROR: Missing required value for DEPLOY_USER_EMAIL" && exit 1
@@ -106,9 +107,9 @@ git push --force deployremote HEAD:"${DEPLOY_BRANCH}"
 echo "> Push tags."
 git push --force --tags deployremote || true
 
-echo "-------------------------------"
-echo "        Deployed code          "
-echo "-------------------------------"
+echo "==============================="
+echo "      🚚 DEPLOY COMPLETE       "
+echo "==============================="
 echo
 echo "Remote URL    : ${DEPLOY_REMOTE}"
 echo "Remote branch : ${DEPLOY_BRANCH}"
diff --git a/.devtools/provision.sh b/.devtools/provision.sh
index dc8336f..8cc57a3 100755
--- a/.devtools/provision.sh
+++ b/.devtools/provision.sh
@@ -26,9 +26,10 @@ DRUPAL_PROFILE="${DRUPAL_PROFILE:-standard}"
 
 #-------------------------------------------------------------------------------
 
-echo "----------------------------------"
-echo "   Install Drupal and extensions  "
-echo "----------------------------------"
+echo "==============================="
+echo "         🚀 PROVISION          "
+echo "==============================="
+echo
 
 drush() { "build/vendor/bin/drush" -r "$(pwd)/build/web" -y "$@"; }
 
@@ -65,9 +66,9 @@ done
 curl -s "http://${WEBSERVER_HOST}:${WEBSERVER_PORT}" >/dev/null
 
 echo
-echo "-------------------------------"
-echo "    Install finished 🚀🚀🚀   "
-echo "-------------------------------"
+echo "==============================="
+echo "    🚀 PROVISION COMPLETE      "
+echo "==============================="
 echo
 echo "Site URL:            http://${WEBSERVER_HOST}:${WEBSERVER_PORT}"
 echo -n "One-time login link: "
diff --git a/.devtools/start-server.sh b/.devtools/start.sh
similarity index 86%
rename from .devtools/start-server.sh
rename to .devtools/start.sh
index 5f0b128..f4b5685 100755
--- a/.devtools/start-server.sh
+++ b/.devtools/start.sh
@@ -1,6 +1,6 @@
 #!/usr/bin/env bash
 ##
-# Start built-in PHP-server.
+# Start development environment.
 #
 # shellcheck disable=SC2015,SC2094,SC2002
 
@@ -22,9 +22,10 @@ WEBSERVER_WAIT_TIMEOUT="${WEBSERVER_WAIT_TIMEOUT:-5}"
 
 #-------------------------------------------------------------------------------
 
-echo "-------------------------------"
-echo "   Start built-in PHP server   "
-echo "-------------------------------"
+echo "==============================="
+echo "      💻 START ENVIRONMENT     "
+echo "==============================="
+echo
 
 echo "> Stop previously started services, if any."
 killall -9 php >/dev/null 2>&1 || true
@@ -44,9 +45,9 @@ echo "> Check that the server can serve content."
 curl -s -o /dev/null -w "%{http_code}" -L -I "http://${WEBSERVER_HOST}:${WEBSERVER_PORT}" | grep -q 200 || (echo "ERROR: Server is started, but site cannot be served" && exit 1)
 
 echo
-echo "-----------------------------------"
-echo "  Started built-in PHP server 🚀🚀 "
-echo "-----------------------------------"
+echo "==============================="
+echo "      💻 ENVIRONMENT READY     "
+echo "==============================="
 echo
 echo "Directory : $(pwd)/build/web"
 echo "URL       : http://${WEBSERVER_HOST}:${WEBSERVER_PORT}"
diff --git a/.gitattributes b/.gitattributes
index a0d3dee..d4ebe5b 100644
--- a/.gitattributes
+++ b/.gitattributes
@@ -1,21 +1,21 @@
 # Ignore files for distribution archives.
 
 # Uncomment the lines below in your project.
-# .ahoy.yml         export-ignore
-# .circleci         export-ignore
-# .devtools         export-ignore
-# .editorconfig     export-ignore
-# .gitattributes    export-ignore
-# .github           export-ignore
-# .gitignore        export-ignore
-# .twig_cs.php      export-ignore
-# composer.dev.json export-ignore
-# phpcs.xml         export-ignore
-# phpmd.xml         export-ignore
-# phpstan.neon      export-ignore
-# rector.php        export-ignore
-# renovate.json     export-ignore
-# tests             export-ignore
+# .ahoy.yml          export-ignore
+# .circleci          export-ignore
+# .devtools          export-ignore
+# .editorconfig      export-ignore
+# .gitattributes     export-ignore
+# .github            export-ignore
+# .gitignore         export-ignore
+# .twig-cs-fixer.php export-ignore
+# composer.dev.json  export-ignore
+# phpcs.xml          export-ignore
+# phpmd.xml          export-ignore
+# phpstan.neon       export-ignore
+# rector.php         export-ignore
+# renovate.json      export-ignore
+# tests              export-ignore
 
 # Remove the lines below in your project.
 .github/FUNDING.yml export-ignore
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 343e789..a3e3bbf 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -24,8 +24,8 @@ jobs:
 
           - name: test-php-8.2-legacy
             php-version: 8.2
-            drupal-version: 9.5
-            drupal-project-sha: 9.x
+            drupal-version: 10.1
+            drupal-project-sha: 10.x
             drupal-version-alias: legacy
 
           - name: test-php-8.2-next
@@ -65,10 +65,10 @@ jobs:
           php-version: ${{ matrix.php-version }}
 
       - name: Build the codebase
-        run: .devtools/build-codebase.sh
+        run: .devtools/assemble.sh
 
       - name: Start built-in PHP server
-        run: .devtools/start-server.sh
+        run: .devtools/start.sh
 
       - name: Provision site
         run: .devtools/provision.sh
@@ -89,9 +89,9 @@ jobs:
         working-directory: build
         run: vendor/bin/phpmd . text phpmd.xml || [ "${CI_PHPMD_IGNORE_FAILURE:-0}" -eq 1 ]
 
-      - name: Lint code with Twigcs
+      - name: Lint code with Twig CS Fixer
         working-directory: build
-        run: vendor/bin/twigcs || [ "${CI_TWIGCS_IGNORE_FAILURE:-0}" -eq 1 ]
+        run: vendor/bin/twig-cs-fixer || [ "${CI_TWIGCSFIXER_IGNORE_FAILURE:-0}" -eq 1 ]
 
       - name: Run tests
         working-directory: build
diff --git a/.scaffold/tests/bats/_assert_init.bash b/.scaffold/tests/bats/_assert_init.bash
index 4f8a222..3e0f48e 100644
--- a/.scaffold/tests/bats/_assert_init.bash
+++ b/.scaffold/tests/bats/_assert_init.bash
@@ -120,29 +120,10 @@ assert_workflow() {
 
   pushd "${dir}" >/dev/null || exit 1
 
-  ./.devtools/build-codebase.sh
-  ./.devtools/start-server.sh
-  ./.devtools/provision.sh
-
-  # Lint.
-  pushd "build" >/dev/null || exit 1
-
-  vendor/bin/phpcs
-  vendor/bin/phpstan
-  vendor/bin/rector --clear-cache --dry-run
-  vendor/bin/phpmd . text phpmd.xml
-  vendor/bin/twigcs
-
-  popd >/dev/null || exit 1
-
-  # Test.
-  ./.devtools/test.sh
-
-  # Change mode to make bats have enough permission to clean tmp test directory.
-  chmod -R 777 "build/web/sites/default"
-
-  # Allow bats finish this assert, we need kill php process because it run in background in start server step.
-  killall -9 php >/dev/null 2>&1 || true
+  ahoy build
+  ahoy lint
+  ahoy test
+  ahoy reset
 
   popd >/dev/null || exit 1
 }
diff --git a/.twig-cs-fixer.php b/.twig-cs-fixer.php
new file mode 100644
index 0000000..7db2293
--- /dev/null
+++ b/.twig-cs-fixer.php
@@ -0,0 +1,16 @@
+<?php
+
+declare(strict_types = 1);
+
+$ruleset = new TwigCsFixer\Ruleset\Ruleset();
+$ruleset->addStandard(new TwigCsFixer\Standard\Twig());
+
+$finder = new TwigCsFixer\File\Finder();
+$finder->in(__DIR__ . '/web/modules/custom');
+$finder->in(__DIR__ . '/web/themes/custom');
+
+$config = new TwigCsFixer\Config\Config();
+$config->setRuleset($ruleset);
+$config->setFinder($finder);
+
+return $config;
diff --git a/.twig_cs.php b/.twig_cs.php
deleted file mode 100644
index a44f6be..0000000
--- a/.twig_cs.php
+++ /dev/null
@@ -1,15 +0,0 @@
-<?php
-
-declare(strict_types=1);
-
-use FriendsOfTwig\Twigcs;
-
-return Twigcs\Config\Config::create()
-  ->setName('custom-config')
-  ->setSeverity('error')
-  ->setReporter('console')
-  ->setRuleSet(Twigcs\Ruleset\Official::class)
-  ->addFinder(Twigcs\Finder\TemplateFinder::create()->in([
-    __DIR__ . '/web/modules/custom',
-    __DIR__ . '/web/themes/custom',
-  ]));
diff --git a/README.dist.md b/README.dist.md
index c40f438..f37471a 100644
--- a/README.dist.md
+++ b/README.dist.md
@@ -39,7 +39,7 @@ the provided scripts.
 
 ### Build
 
-Run `.devtools/build-codebase.sh` (or `ahoy build-codebase`
+Run `.devtools/assemble.sh` (or `ahoy assemble`
 if [Ahoy](https://github.com/ahoy-cli/ahoy) is installed) to start inbuilt PHP
 server locally and run the same commands as in CI, plus installing a site and
 your extension automatically.
@@ -58,14 +58,14 @@ vendor/bin/phpcs
 vendor/bin/phpstan
 vendor/bin/rector --clear-cache --dry-run
 vendor/bin/phpmd . text phpmd.xml
-vendor/bin/twigcs
+vendor/bin/twig-cs-fixer
 ```
 
 - PHPCS config: [`phpcs.xml`](phpcs.xml)
 - PHPStan config: [`phpstan.neon`](phpstan.neon)
 - PHPMD config: [`phpmd.xml`](phpmd.xml)
 - Rector config: [`rector.php`](rector.php)
-- TwigCS config: [`.twig_cs.php`](.twig_cs.php)
+- Twig CS Fixer config: [`.twig-cs-fixer.php`](.twig-cs-fixer.php)
 
 ### Tests
 
diff --git a/README.md b/README.md
index 8953912..e1258c4 100644
--- a/README.md
+++ b/README.md
@@ -55,7 +55,7 @@ to [drupal.org](https://drupal.org).
       with PHPStan (including [PHPStan Drupal](https://github.com/mglaman/phpstan-drupal)).
     - PHP deprecated code analysis
       with [Drupal Rector](https://github.com/palantirnet/drupal-rector).
-    - Twig code analysis with [TwigCS](https://github.com/friendsoftwig/twigcs).
+    - Twig code analysis with [Twig CS Fixer](https://github.com/VincentLanglet/Twig-CS-Fixer).
       ![Lint process](https://user-images.githubusercontent.com/378794/253732548-9403e4cc-db03-4696-b114-32517ab0a571.gif)
   - Drupal's Simpletest testing support - runs tests in the same way as
     [drupal.org](https://drupal.org)'s Drupal CI
diff --git a/composer.dev.json b/composer.dev.json
index 6a7f151..84ae244 100644
--- a/composer.dev.json
+++ b/composer.dev.json
@@ -1,14 +1,14 @@
 {
     "require-dev": {
         "dealerdirect/phpcodesniffer-composer-installer": "^1.0",
-        "friendsoftwig/twigcs": "^6.2",
         "jangregor/phpstan-prophecy": "^1.0",
         "mglaman/phpstan-drupal": "^1.2",
         "palantirnet/drupal-rector": "^0.18",
         "phpcompatibility/php-compatibility": "^9.3",
         "phpmd/phpmd": "^2.15",
         "phpspec/prophecy-phpunit": "^2",
-        "phpstan/extension-installer": "^1.3"
+        "phpstan/extension-installer": "^1.3",
+        "vincentlanglet/twig-cs-fixer": "^2.8"
     },
     "config": {
         "allow-plugins": {
diff --git a/init.sh b/init.sh
index dd7b0d7..d68dbdd 100755
--- a/init.sh
+++ b/init.sh
@@ -60,10 +60,6 @@ replace_string_content() {
   set -e
 }
 
-to_lowercase() {
-  echo "${1}" | tr '[:upper:]' '[:lower:]'
-}
-
 remove_string_content() {
   local token="${1}"
   local sed_opts
@@ -71,14 +67,6 @@ remove_string_content() {
   grep -rI --exclude-dir=".git" --exclude-dir=".idea" --exclude-dir="vendor" --exclude-dir="node_modules" -l "${token}" "$(pwd)" | LC_ALL=C.UTF-8 xargs sed "${sed_opts[@]}" -e "/^${token}/d" || true
 }
 
-remove_string_content_line() {
-  local token="${1}"
-  local target="${2:-.}"
-  local sed_opts
-  sed_opts=(-i) && [ "$(uname)" == "Darwin" ] && sed_opts=(-i '')
-  grep -rI --exclude-dir=".git" --exclude-dir=".idea" --exclude-dir="vendor" --exclude-dir="node_modules" -l "${token}" "$(pwd)/${target}" | LC_ALL=C.UTF-8 xargs sed "${sed_opts[@]}" -e "/${token}/d" || true
-}
-
 remove_tokens_with_content() {
   local token="${1}"
   local sed_opts
@@ -187,7 +175,7 @@ process_internal() {
   uncomment_line ".gitattributes" ".gitattributes"
   uncomment_line ".gitattributes" ".github"
   uncomment_line ".gitattributes" ".gitignore"
-  uncomment_line ".gitattributes" ".twig_cs.php"
+  uncomment_line ".gitattributes" ".twig-cs-fixer.php"
   uncomment_line ".gitattributes" "composer.dev.json"
   uncomment_line ".gitattributes" "phpcs.xml"
   uncomment_line ".gitattributes" "phpmd.xml"
@@ -239,9 +227,12 @@ main() {
   echo
 
   [ -z "${extension_name}" ] && extension_name="$(ask "Name")"
-  [ -z "${extension_machine_name}" ] && extension_machine_name="$(ask "Machine name")"
-  [ -z "${extension_type}" ] && extension_type="$(ask "Type: module or theme")"
-  [ -z "${ci_provider}" ] && ci_provider="$(ask "CI Provider: GitHub Actions or CircleCI")"
+  extension_machine_name_default="$(convert_string "${extension_name}" "file_name")"
+  [ -z "${extension_machine_name}" ] && extension_machine_name="$(ask "Machine name" "${extension_machine_name_default}")"
+  extension_type_default="module"
+  [ -z "${extension_type}" ] && extension_type="$(ask "Type: module or theme" "${extension_type_default}")"
+  ci_provider_default="GitHub Actions"
+  [ -z "${ci_provider}" ] && ci_provider="$(ask "CI Provider: GitHub Actions or CircleCI" "${ci_provider_default}")"
 
   remove_self="$(ask_yesno "Remove this script")"
 
diff --git a/your_extension.info.yml b/your_extension.info.yml
index 760f6de..9084ee5 100644
--- a/your_extension.info.yml
+++ b/your_extension.info.yml
@@ -2,7 +2,7 @@ name: Drupal extension scaffold
 type: module
 description: Drupal extension scaffold example.
 package: Testing
-core_version_requirement: ^9 || ^10
+core_version_requirement: ^10
 
 dependencies:
   - drupal:config