diff --git a/package.json b/package.json
index 4e6bbc5..f1c1f0c 100644
--- a/package.json
+++ b/package.json
@@ -31,7 +31,7 @@
     "@koa/bodyparser": "^5.1.1",
     "@koa/cors": "^5.0.0",
     "@koa/router": "^13.1.0",
-    "@ldhop/core": "^0.0.1-alpha.15",
+    "@ldhop/core": "^0.1.0",
     "@soid/koa": "^0.1.2",
     "@solid/access-token-verifier": "^2.0.5",
     "@types/koa": "^2.15.0",
diff --git a/src/tasks/refreshIndex.ts b/src/tasks/refreshIndex.ts
index b6deda6..64d1308 100644
--- a/src/tasks/refreshIndex.ts
+++ b/src/tasks/refreshIndex.ts
@@ -1,7 +1,7 @@
 import { QueryAndStore, RdfQuery, run } from '@ldhop/core'
 import { getAuthenticatedFetch } from '@soid/koa'
 import { Parser, Store } from 'n3'
-import { dct, sioc, solid, vcard } from 'rdf-namespaces'
+import { rdf, sioc, solid, vcard } from 'rdf-namespaces'
 import { hospex } from '../namespaces.js'
 import { HttpError } from '../utils/errors.js'
 import { fetchThing, saveThing, validateThing } from '../utils/thing.js'
@@ -16,9 +16,10 @@ const query: RdfQuery = [
   },
   {
     type: 'match',
-    subject: '?publicTypeIndex',
-    predicate: dct.references,
-    pick: 'object',
+    predicate: rdf.type,
+    object: solid.TypeRegistration,
+    graph: '?publicTypeIndex',
+    pick: 'subject',
     target: '?typeRegistration',
   },
   {
diff --git a/yarn.lock b/yarn.lock
index 1f182d3..e2be69f 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -2299,10 +2299,10 @@
     koa-compose "^4.1.0"
     path-to-regexp "^6.3.0"
 
-"@ldhop/core@^0.0.1-alpha.15":
-  version "0.0.1-alpha.16"
-  resolved "https://registry.npmjs.org/@ldhop/core/-/core-0.0.1-alpha.16.tgz#18957917157213cac85ef4d0a681c8539a9162d1"
-  integrity sha512-V3YvT3USbVfrbxf9/FSqUXH2Xu1vo1qFtRW8Kc4mWUkBYJ5/F6lwGf2BKSYpEJEH68f6tB3ZWnysvRhrh9w/Tg==
+"@ldhop/core@^0.1.0":
+  version "0.1.0"
+  resolved "https://registry.npmjs.org/@ldhop/core/-/core-0.1.0.tgz#b67f1f3503cc4cf02d69c442e47c54db6376d32d"
+  integrity sha512-89LP9lwgKYXZWM49mcnQS5ZGkRp5cCXEirL8bopNLK9r84wBDhgQVKU9/YG5hgeJHjHcyP64dUCDwrmDcysANQ==
   dependencies:
     "@emotion/hash" "^0.9.1"
     "@types/n3" "^1.16.4"