diff --git a/test_voucher.rdf b/test_voucher.rdf
index 5162540..90d0c9c 100644
--- a/test_voucher.rdf
+++ b/test_voucher.rdf
@@ -4,7 +4,7 @@
 @prefix foaf: <http://xmlns.com/foaf/0.1/> .
 
 evm:address
-	evm:id	"0x1f92958c96df15f3112a192bc994250e8defef93f"^^<http://www.w3.org/2001/XMLSchema#dateTime> ;
+	evm:id	"0x1f92958c96df15f3112a192bc994250e8defef93f"^^<http://www.w3.org/2001/XMLSchema#token> ;
 	a	cic:fungibleVoucher ;
 	cic:unitOfAccount	cic:ref:wampum ;
 	cic:validFrom	"2023-03-05T19:04:40+00:00"^^<http://www.w3.org/2001/XMLSchema#dateTime> ;
@@ -17,7 +17,7 @@ evm:address
 	ge:community	"Foo tribe" .
 
 evm:address
-	evm:id	"0x58c96df15f3112a192bc994250e8defef93f12345"^^<http://www.w3.org/2001/XMLSchema#dateTime> ;
+	evm:id	"0x58c96df15f3112a192bc994250e8defef93f12345"^^<http://www.w3.org/2001/XMLSchema#token> ;
 	a	cic:fungibleVoucher ;
 	cic:unitOfAccount	"seashells" ;
 	cic:validFrom	"2023-03-04T09:34:33+00:00"^^<http://www.w3.org/2001/XMLSchema#dateTime> ;