diff --git a/composer.json b/composer.json
index eb71f16..cbaa6a8 100644
--- a/composer.json
+++ b/composer.json
@@ -28,7 +28,7 @@
     "require-dev": {
         "nette/tester": "^2.3.4",
         "mockery/mockery": "^1.4.2",
-        "phpstan/phpstan": "^0.12.63",
+        "phpstan/phpstan": "^0.12.78",
         "phpstan/phpstan-strict-rules": "^0.12.7",
         "pepakriz/phpstan-exception-rules": "^0.11.2",
         "phpstan/phpstan-nette": "^0.12.12",