diff --git a/src/Jackalope/Tools/Console/Command/InitDoctrineDbalCommand.php b/src/Jackalope/Tools/Console/Command/InitDoctrineDbalCommand.php
index c187eb9d..65bf75c9 100644
--- a/src/Jackalope/Tools/Console/Command/InitDoctrineDbalCommand.php
+++ b/src/Jackalope/Tools/Console/Command/InitDoctrineDbalCommand.php
@@ -31,7 +31,7 @@ class InitDoctrineDbalCommand extends Command
      * @throws CliInvalidArgumentException
      * @throws \PDOException
      */
-    protected function configure()
+    protected function configure(): void
     {
         $this
             ->setName('jackalope:init:dbal')