diff --git a/composer.json b/composer.json
index 059536c..44854dc 100644
--- a/composer.json
+++ b/composer.json
@@ -30,7 +30,7 @@
         "rector/rector": "^0.17",
         "roave/infection-static-analysis-plugin": "^1.16",
         "spatie/phpunit-watcher": "^1.23",
-        "vimeo/psalm": "^4.3|^5.6",
+        "vimeo/psalm": "^5.6",
         "yiisoft/aliases": "^2.0",
         "yiisoft/cache": "^2.0",
         "yiisoft/cache-file": "^2.0",
diff --git a/src/Schema.php b/src/Schema.php
index 4f469e2..1de5453 100644
--- a/src/Schema.php
+++ b/src/Schema.php
@@ -459,7 +459,6 @@ private function normalizeDefaultValue(?string $defaultValue, ColumnSchemaInterf
                 && $columnSchema->getType() === self::TYPE_TIMESTAMP
                     => new Expression($defaultValue),
             /** @psalm-var string $defaultValue */
-            /** @psalm-suppress PossiblyNullOperand */
             strlen($defaultValue) > 2
                 && str_starts_with($defaultValue, "'")
                 && str_ends_with($defaultValue, "'")