diff --git a/php-packages/phpstan/composer.json b/php-packages/phpstan/composer.json
index 0509ab5272..bfff874e67 100644
--- a/php-packages/phpstan/composer.json
+++ b/php-packages/phpstan/composer.json
@@ -4,7 +4,7 @@
     "minimum-stability": "dev",
     "license": "MIT",
     "require": {
-        "phpstan/phpstan": ">=1.8.11 < 1.9.0",
+        "phpstan/phpstan": "^1.9",
         "nunomaduro/larastan": "^1.0"
     },
     "autoload": {
diff --git a/php-packages/phpstan/phpstan-baseline.neon b/php-packages/phpstan/phpstan-baseline.neon
index c6fbed8ed6..b7b405cc1f 100644
--- a/php-packages/phpstan/phpstan-baseline.neon
+++ b/php-packages/phpstan/phpstan-baseline.neon
@@ -9,12 +9,12 @@ parameters:
 		  reportUnmatched: false
 
 		#	We ignore this because resolve can either take a class name as the generic return type or just a binding name.
-		- message: "#Template type T of function resolve[()]{2} is not referenced in a parameter.#"
+		- message: '#Template type T of function resolve\(\) is not referenced in a parameter.#'
 		  reportUnmatched: false
 
 		#	We ignore new static errors because we want extensibility.
 		#	@TODO: needs discussion.
-		- message: "#^Unsafe usage of new static[()]{2}.$#"
+		- message: '#^Unsafe usage of new static\(\).$#'
 		  reportUnmatched: false
 
 		# ConnectionInterface lacks methods that exist in the implementation,