diff --git a/requirements.txt b/requirements.txt
index af4ceb7..d25cb77 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,4 +1,4 @@
 requests==2.26.0
 skosprovider==1.1.0
 #-e git+https://github.com/OnroerendErfgoed/skosprovider.git#egg=skosprovider
-rdflib==5.0.0
+rdflib==6.2.0
diff --git a/skosprovider_heritagedata/utils.py b/skosprovider_heritagedata/utils.py
index a49a207..224a5ab 100644
--- a/skosprovider_heritagedata/utils.py
+++ b/skosprovider_heritagedata/utils.py
@@ -92,7 +92,7 @@ def things_from_graph(graph, concept_scheme):
 def _create_from_subject_typelist(graph, subject, typelist):
     list = []
     for p in typelist:
-        term = SKOS.term(p)
+        term = SKOS.__getitem__(p)
         list.extend(_create_from_subject_predicate(graph, subject, term))
     return list
 
@@ -151,7 +151,7 @@ def uri_to_graph(uri, **kwargs):
         raise ProviderUnavailableException("URI not available: %s" % uri)
     if res.status_code == 404:
         return False
-    graph.parse(data=res.content)
+    graph.parse(data=res.content, format="application/rdf+xml")
     # heritagedata.org returns a empy page/graph when a resource does not exists
     # (statsu_code 200). For this reason we return False if the graph is empty
     if len(graph) == 0: