diff --git a/composer.json b/composer.json
index 120116ea..1ebc6209 100644
--- a/composer.json
+++ b/composer.json
@@ -35,7 +35,7 @@
         "phpstan/phpstan-doctrine": "1.3.59",
         "phpstan/phpstan-phpunit": "1.3.15",
         "phpstan/phpstan-symfony": "1.3.7",
-        "rector/rector": "0.19.8",
+        "rector/rector": "1.0.0",
         "roave/security-advisories": "dev-master",
         "serendipity_hq/component-text-matrix": "^3.0",
         "serendipity_hq/rector-config": "^1.0",