diff --git a/.github/CODEOWNERS b/.github/CODEOWNERS
index 1d765050..21dd5340 100644
--- a/.github/CODEOWNERS
+++ b/.github/CODEOWNERS
@@ -1,3 +1,3 @@
-# https://docs.github.com/en/repositories/managing-your-repositorys-settings-and-features/customizing-your-repository/about-code-owners#codeowners-file-size
+# https://docs.github.com/en/repositories/managing-your-repositorys-settings-and-features/customizing-your-repository/about-code-owners
 
 * @ergebnis-bot @localheinz
diff --git a/.github/CONTRIBUTING.md b/.github/CONTRIBUTING.md
index 2065203e..8a26f18a 100644
--- a/.github/CONTRIBUTING.md
+++ b/.github/CONTRIBUTING.md
@@ -127,7 +127,7 @@ Run
 make
 ```
 
-to enforce coding standards, run a static code analysis, and run tests!
+to automatically refactor code, enforce coding standards, run a static code analysis, and run tests!
 
 ## Help
 
diff --git a/.github/SECURITY.md b/.github/SECURITY.md
new file mode 100644
index 00000000..db7e9eb1
--- /dev/null
+++ b/.github/SECURITY.md
@@ -0,0 +1,17 @@
+# Security Policy
+
+## Supported Versions
+
+The following versions of `ergebnis/composer-normalize` have active support:
+
+- `^2.30.2`
+
+## Unsupported Versions
+
+The following versions of `ergebnis/composer-normalize` have reached their end of life:
+
+- `<=2.30.2`
+
+## Reporting a Vulnerability
+
+If you believe that you have found a security vulnerability, please send an email to `am@localheinz.com`. Ensure to include all details required to understand the severity of the issue.
diff --git a/.github/settings.yml b/.github/settings.yml
index 08d06ec7..6c065d35 100644
--- a/.github/settings.yml
+++ b/.github/settings.yml
@@ -80,6 +80,7 @@ repository:
   description: ":musical_note: Provides a composer plugin for normalizing composer.json."
   enable_automated_security_fixes: true
   enable_vulnerability_alerts: true
+  has_discussions: false
   has_downloads: true
   has_issues: true
   has_pages: false
diff --git a/Makefile b/Makefile
index d2fea5c2..32162241 100644
--- a/Makefile
+++ b/Makefile
@@ -12,7 +12,7 @@ code-coverage: vendor ## Collects coverage from running unit and integration tes
 coding-standards: phive vendor ## Lints YAML files with yamllint, normalizes composer.json with ergebnis/composer-normalize, and fixes code style issues with friendsofphp/php-cs-fixer
 	yamllint -c .yamllint.yaml --strict .
 	.phive/composer-normalize
-	mkdir -p .build/php-cs-fixer
+	mkdir -p .build/php-cs-fixer/
 	vendor/bin/php-cs-fixer fix --config=.php-cs-fixer.php --diff --verbose
 
 .PHONY: dependency-analysis
@@ -25,7 +25,7 @@ help: ## Displays this list of targets with descriptions
 
 .PHONY: mutation-tests
 mutation-tests: vendor ## Runs mutation tests with infection/infection
-	mkdir -p .build/infection
+	mkdir -p .build/infection/
 	vendor/bin/infection --configuration=infection.json
 
 .PHONY: phar
@@ -40,11 +40,12 @@ phar: phive vendor ## Builds a phar with humbug/box
 
 .PHONY: phive
 phive: .phive ## Installs dependencies with phive
-	mkdir -p .build/phive
+	mkdir -p .build/phive/
 	PHIVE_HOME=.build/phive phive install --trust-gpg-keys 0xC00543248C87FB13,0x033E5F8D801A2F8D,0x2DF45277AEF09A2F
 
 .PHONY: refactoring
 refactoring: vendor ## Runs automated refactoring with rector/rector
+	mkdir -p .build/rector/
 	vendor/bin/rector process --config=rector.php
 
 .PHONY: schema
@@ -58,19 +59,19 @@ security-analysis: vendor ## Runs a security analysis with composer
 
 .PHONY: static-code-analysis
 static-code-analysis: vendor ## Runs a static code analysis with vimeo/psalm
-	mkdir -p .build/psalm
+	mkdir -p .build/psalm/
 	vendor/bin/psalm --config=psalm.xml --clear-cache
 	vendor/bin/psalm --config=psalm.xml --show-info=false --stats --threads=4
 
 .PHONY: static-code-analysis-baseline
 static-code-analysis-baseline: vendor ## Generates a baseline for static code analysis with vimeo/psalm
-	mkdir -p .build/psalm
+	mkdir -p .build/psalm/
 	vendor/bin/psalm --config=psalm.xml --clear-cache
 	vendor/bin/psalm --config=psalm.xml --set-baseline=psalm-baseline.xml
 
 .PHONY: tests
 tests: vendor ## Runs unit and integration tests with phpunit/phpunit
-	mkdir -p .build/phpunit
+	mkdir -p .build/phpunit/
 	vendor/bin/phpunit --configuration=test/phpunit.xml --testsuite=unit
 	vendor/bin/phpunit --configuration=test/phpunit.xml --testsuite=integration
 
diff --git a/README.md b/README.md
index db88dfa9..9cdaad14 100644
--- a/README.md
+++ b/README.md
@@ -498,6 +498,10 @@ Please have a look at [`CONTRIBUTING.md`](.github/CONTRIBUTING.md).
 
 Please have a look at [`CODE_OF_CONDUCT.md`](https://github.com/ergebnis/.github/blob/main/CODE_OF_CONDUCT.md).
 
+## Security Policy
+
+Please have a look at [`SECURITY.md`](.github/SECURITY.md).
+
 ## License
 
 This package is licensed using the MIT License.
diff --git a/composer-require-checker.json b/composer-require-checker.json
index b1208fb7..60012af8 100644
--- a/composer-require-checker.json
+++ b/composer-require-checker.json
@@ -1,20 +1,5 @@
 {
   "symbol-whitelist": [
-    "array",
-    "bool",
-    "callable",
-    "false",
-    "float",
-    "int",
-    "iterable",
-    "null",
-    "object",
-    "parent",
-    "self",
-    "static",
-    "string",
-    "true",
-    "void",
     "Composer\\Command\\BaseCommand",
     "Composer\\Composer",
     "Composer\\Console\\Application",
diff --git a/composer.json b/composer.json
index 46f50d09..cd8ba157 100644
--- a/composer.json
+++ b/composer.json
@@ -18,7 +18,8 @@
   "homepage": "https://github.com/ergebnis/composer-normalize",
   "support": {
     "issues": "https://github.com/ergebnis/composer-normalize/issues",
-    "source": "https://github.com/ergebnis/composer-normalize"
+    "source": "https://github.com/ergebnis/composer-normalize",
+    "security": "https://github.com/ergebnis/composer-normalize/blob/main/.github/SECURITY.md"
   },
   "require": {
     "php": "~8.0.0 || ~8.1.0 || ~8.2.0",