diff --git a/composer.json b/composer.json
index cf8fcad..f850163 100644
--- a/composer.json
+++ b/composer.json
@@ -30,6 +30,7 @@
 		"phpunit/phpunit": "^8.5 || ^10.1 || ^11.0",
 		"php-parallel-lint/php-parallel-lint": "^1.2",
 		"php-parallel-lint/php-console-highlighter": "^1.0",
+		"phpstan/phpstan-deprecation-rules": "^1.2",
 		"spaze/coding-standard": "^1.7"
 	},
 	"autoload": {
diff --git a/phpstan.neon b/phpstan.neon
index fe1052d..9b15f43 100644
--- a/phpstan.neon
+++ b/phpstan.neon
@@ -13,6 +13,7 @@ parameters:
 
 includes:
 	- vendor/phpstan/phpstan/conf/bleedingEdge.neon
+	- vendor/phpstan/phpstan-deprecation-rules/rules.neon
 	- extension.neon
 	- disallowed-dangerous-calls.neon
 	- disallowed-execution-calls.neon