diff --git a/dawn.json b/dawn.json
index 81fb547009..69e7c69be0 100644
--- a/dawn.json
+++ b/dawn.json
@@ -875,7 +875,8 @@
         "members": [
             {"name": "width", "type": "uint32_t"},
             {"name": "height", "type": "uint32_t", "default": 1},
-            {"name": "depth", "type": "uint32_t", "default": 1}
+            {"name": "depth", "type": "uint32_t", "default": 1},
+            {"name": "depthOrArrayLayers", "type": "uint32_t", "default": 1}
         ]
     },
     "fence": {