diff --git a/GAP/GAP-1.2.3.ckan b/GAP/GAP-1.2.3.ckan
index 2ad8fb05bd..b815e3251a 100644
--- a/GAP/GAP-1.2.3.ckan
+++ b/GAP/GAP-1.2.3.ckan
@@ -48,5 +48,10 @@
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     "download_size": 1493759,
+    "download_hash": {
+        "sha1": "68231FC79185F9B12882F0BEE44F087FFBA3B1B9",
+        "sha256": "1F7ED4309C0796C9E42EE51BA306D9E8F72DE8243C0B5ED51E754ADFE33F9F23"
+    },
+    "download_content_type": "application/zip",
     "x_generated_by": "netkan"
 }