diff --git a/src/Storage/Internal/StorageDataClient.php b/src/Storage/Internal/StorageDataClient.php
index d62dc37..e90aa54 100644
--- a/src/Storage/Internal/StorageDataClient.php
+++ b/src/Storage/Internal/StorageDataClient.php
@@ -71,7 +71,7 @@ private function processCall(UnaryCall $call)
     /**
      * @param string $storeName
      * @param string $key
-     * @param string|int|double $value
+     * @param string|int|float $value
      * @return ResponseFuture<StorageSetResponse>
      */
     public function set(string $storeName, string $key, $value): ResponseFuture