diff --git a/builder/pwnagotchi.json b/builder/pwnagotchi.json
index 170feff9..39d05876 100644
--- a/builder/pwnagotchi.json
+++ b/builder/pwnagotchi.json
@@ -4,7 +4,9 @@
       "name": "pwnagotchi",
       "type": "arm-image",
       "iso_url": "https://downloads.raspberrypi.org/raspios_lite_arm64/images/raspios_lite_arm64-2023-05-03/2023-05-03-raspios-bullseye-arm64-lite.img.xz",
-      "checksum_types": "SHA256",
+      "checksum_types": [
+        "sha256"
+      ],
       "iso_checksum": "8d438cace321b4e2fa32334d620d821197e188fe"
     }
   ],