diff --git a/plugin.yml b/plugin.yml
index fd7440e..759a6fa 100644
--- a/plugin.yml
+++ b/plugin.yml
@@ -7,6 +7,8 @@ configuration:
   properties:
     build-args:
       type: [array, string]
+    additional-build-args:
+      type: string
     cache-on:
       type: [array, string]
     dockerfile: