diff --git a/composer.json b/composer.json
index fba3895..60d821f 100644
--- a/composer.json
+++ b/composer.json
@@ -22,7 +22,7 @@
     "require-dev": {
         "nette/tester": "^2.3.5",
         "mockery/mockery": "^1.4.2",
-        "phpstan/phpstan": "^0.12.60",
+        "phpstan/phpstan": "^0.12.78",
         "phpstan/phpstan-strict-rules": "^0.12.6",
         "pepakriz/phpstan-exception-rules": "^0.11.6",
         "nepada/phpstan-nette-tester": "^0.3.1",