diff --git a/composer.json b/composer.json
index 068544e27..884bd8816 100644
--- a/composer.json
+++ b/composer.json
@@ -64,7 +64,7 @@
         "nyholm/psr7-server": "^1.0",
         "phpspec/prophecy": "^1.15",
         "phpspec/prophecy-phpunit": "^2.0",
-        "phpstan/phpstan": "^1.5",
+        "phpstan/phpstan": "^1.6",
         "phpunit/phpunit": "^9.5",
         "slim/http": "^1.2",
         "slim/psr7": "^1.5",