diff --git a/composer.json b/composer.json
index 6d845a9..2bb0e42 100644
--- a/composer.json
+++ b/composer.json
@@ -20,9 +20,9 @@
     },
     "require-dev": {
         "icanhazstring/composer-unused": "^0.7.5",
-        "infection/infection": "^0.25.0",
+        "infection/infection": "^0.25",
         "phpro/grumphp": "^1.0",
-        "phpstan/phpstan": "^0.12",
+        "phpstan/phpstan": "^1.0",
         "phpunit/phpunit": "^8.0 || ^9.0",
         "roave/infection-static-analysis-plugin": "^1.8",
         "squizlabs/php_codesniffer": "^3.4",
@@ -50,7 +50,7 @@
         ],
         "cs-check": "phpcs src --colors",
         "cs-fix": "phpcbf src --colors",
-        "inspect": "phpstan analyse src -l7 --ansi",
+        "inspect": "phpstan analyse src -l9 --ansi",
         "test": "phpunit --colors=always",
         "psalm": "psalm",
         "infection": "XDEBUG_MODE=coverage roave-infection-static-analysis-plugin"
diff --git a/src/Read/Segment.php b/src/Read/Segment.php
index da0be1a..1fe6fbc 100644
--- a/src/Read/Segment.php
+++ b/src/Read/Segment.php
@@ -20,7 +20,7 @@ public function criteria(): array;
      */
     public function match(array $payload): bool;
     /**
-     * @return array<string, string|array>
+     * @return array<string, string|array<string, mixed>>
      */
     public function toArray(): array;
 }
diff --git a/src/Read/ToggleStrategy.php b/src/Read/ToggleStrategy.php
index 436d05f..e181bb0 100644
--- a/src/Read/ToggleStrategy.php
+++ b/src/Read/ToggleStrategy.php
@@ -12,7 +12,7 @@ public function id(): string;
     public function type(): string;
     public function isSatisfiedBy(ConsumerIdentity $identity): bool;
     /**
-     * @return array<string, string|array>
+     * @return array<string, string|int>
      */
     public function toArray(): array;
 }