diff --git a/vocabs/v1/context.jsonld b/vocabs/v1/context.jsonld
index f509d8f2..637eca85 100644
--- a/vocabs/v1/context.jsonld
+++ b/vocabs/v1/context.jsonld
@@ -54,7 +54,8 @@
     },
     "verificationMethod": {
       "@id": "https://w3id.org/security#verificationMethod",
-      "@type": "@id"
+      "@type": "@id",
+      "@container": "@set"
     }
   }
 }