diff --git a/ed/index.json b/ed/index.json
index 16b183732c56..56ef3403057f 100644
--- a/ed/index.json
+++ b/ed/index.json
@@ -1,7 +1,7 @@
 {
   "type": "crawl",
   "title": "Reffy crawl",
-  "date": "2024-11-28T06:43:31.783Z",
+  "date": "2024-11-28T12:48:57.034Z",
   "options": {
     "fallback": "ed/index.json",
     "output": "report",
@@ -675,7 +675,7 @@
   },
   "stats": {
     "crawled": 644,
-    "errors": 1
+    "errors": 2
   },
   "crawler": "reffy-17.2.10",
   "results": [
@@ -4522,7 +4522,8 @@
       },
       "date": "31 October 2024",
       "links": "links/EXT_blend_minmax.json",
-      "idl": "idl/EXT_blend_minmax.idl"
+      "idl": "idl/EXT_blend_minmax.idl",
+      "error": "Error: Loading https://registry.khronos.org/webgl/extensions/EXT_blend_minmax/ triggered HTTP status 521\n    at processSpecification (file:///home/runner/work/webref/webref/node_modules/reffy/src/lib/util.js:481:19)\n    at async crawlSpec (file:///home/runner/work/webref/webref/node_modules/reffy/src/lib/specs-crawler.js:107:22)\n    at async processSpec (file:///home/runner/work/webref/webref/node_modules/reffy/src/lib/specs-crawler.js:352:22)\n    at async ThrottledQueue.runThrottled (file:///home/runner/work/webref/webref/node_modules/reffy/src/lib/throttled-queue.js:78:22)\n    at async Promise.all (index 68)\n    at async crawlList (file:///home/runner/work/webref/webref/node_modules/reffy/src/lib/specs-crawler.js:373:21)"
     },
     {
       "url": "https://registry.khronos.org/webgl/extensions/EXT_color_buffer_float/",
@@ -15720,9 +15721,9 @@
       ],
       "crawled": "https://www.rfc-editor.org/rfc/rfc8878",
       "crawlCacheInfo": {
-        "lastModified": "Tue, 19 Nov 2024 08:20:39 GMT"
+        "lastModified": "Tue, 26 Nov 2024 05:40:04 GMT"
       },
-      "date": "19 November 2024",
+      "date": "26 November 2024",
       "links": "links/rfc8878.json",
       "refs": "refs/rfc8878.json",
       "headings": "headings/rfc8878.json",