diff --git a/src/Spryker/Zed/Propel/Persistence/BatchProcessor/ActiveRecordBatchProcessorTrait.php b/src/Spryker/Zed/Propel/Persistence/BatchProcessor/ActiveRecordBatchProcessorTrait.php
index 1771058..ca0a04c 100644
--- a/src/Spryker/Zed/Propel/Persistence/BatchProcessor/ActiveRecordBatchProcessorTrait.php
+++ b/src/Spryker/Zed/Propel/Persistence/BatchProcessor/ActiveRecordBatchProcessorTrait.php
@@ -787,7 +787,7 @@ protected function getValue(ColumnMap $columnMap, TableMap $tableMap, $value)
     /**
      * @return bool
      */
-    protected function requiresPrimaryKeyValue()
+    protected function requiresPrimaryKeyValue(): bool
     {
         return ($this->getAdapter() instanceof PgsqlAdapter);
     }