diff --git a/Makefile b/Makefile
index 2542edb..a3ead85 100644
--- a/Makefile
+++ b/Makefile
@@ -16,7 +16,7 @@ csf:
 	vendor/bin/codefixer src tests
 
 phpstan:
-	vendor/bin/phpstan analyse -l max -c phpstan.neon src
+	vendor/bin/phpstan analyse -l 8 -c phpstan.neon src
 
 tests:
 	vendor/bin/codecept run
diff --git a/composer.json b/composer.json
index 17c506f..3c0c78e 100755
--- a/composer.json
+++ b/composer.json
@@ -16,14 +16,14 @@
   },
   "require-dev": {
     "codeception/codeception": "^4.1.0",
-    "codeception/module-asserts": "^1.3.0",
-    "codeception/module-phpbrowser": "^1.0.0",
+    "codeception/module-asserts": "^1.3.0|^2.0.0",
+    "codeception/module-phpbrowser": "^1.0.0|^2.0.0",
     "nette/di": "^3.0.0",
     "nette/application": "^3.0.0",
     "ninjify/qa": "^0.12.0",
-    "phpstan/phpstan": "^0.12",
-    "phpstan/phpstan-deprecation-rules": "^0.12",
-    "phpstan/phpstan-nette": "^0.12"
+    "phpstan/phpstan": "^1.0",
+    "phpstan/phpstan-deprecation-rules": "^1.0",
+    "phpstan/phpstan-nette": "^1.0"
   },
   "autoload": {
     "psr-4": {