diff --git a/biosimulators_utils/omex_meta/data_model.py b/biosimulators_utils/omex_meta/data_model.py
index ee5a5837..9c22641c 100644
--- a/biosimulators_utils/omex_meta/data_model.py
+++ b/biosimulators_utils/omex_meta/data_model.py
@@ -78,12 +78,12 @@ class OmexMetadataSchema(str, enum.Enum):
 BIOSIMULATIONS_ROOT_URI_PATTERN = r'^(http://omex-library\.org/.*?\.omex)(/|$)'
 
 BIOSIMULATIONS_PREDICATE_TYPES = {
-    'http://dublincore.org/specifications/dublin-core/dcmi-terms/title': {
+    'http://purl.org/dc/elements/1.1/title': {
         'namespace': {
             'prefix': 'dc',
-            'uri': 'http://dublincore.org/specifications/dublin-core/dcmi-terms/',
+            'uri': 'http://purl.org/dc/elements/1.1/',
         },
-        'uri': 'http://dublincore.org/specifications/dublin-core/dcmi-terms/title',
+        'uri': 'http://purl.org/dc/elements/1.1/title',
         'attribute': 'title',
         'label': 'title',
         'multiple_allowed': False,
@@ -91,12 +91,12 @@ class OmexMetadataSchema(str, enum.Enum):
         'has_label': True,
         'required': True,
     },
-    'http://dublincore.org/specifications/dublin-core/dcmi-terms/abstract': {
+    'http://purl.org/dc/elements/1.1/abstract': {
         'namespace': {
             'prefix': 'dc',
-            'uri': 'http://dublincore.org/specifications/dublin-core/dcmi-terms/',
+            'uri': 'http://purl.org/dc/elements/1.1/',
         },
-        'uri': 'http://dublincore.org/specifications/dublin-core/dcmi-terms/abstract',
+        'uri': 'http://purl.org/dc/elements/1.1/abstract',
         'attribute': 'abstract',
         'label': 'Abstract',
         'multiple_allowed': False,
@@ -117,12 +117,12 @@ class OmexMetadataSchema(str, enum.Enum):
         'has_label': True,
         'required': False,
     },
-    'http://dublincore.org/specifications/dublin-core/dcmi-terms/description': {
+    'http://purl.org/dc/elements/1.1/description': {
         'namespace': {
             'prefix': 'dc',
-            'uri': 'http://dublincore.org/specifications/dublin-core/dcmi-terms/',
+            'uri': 'http://purl.org/dc/elements/1.1/',
         },
-        'uri': 'http://dublincore.org/specifications/dublin-core/dcmi-terms/description',
+        'uri': 'http://purl.org/dc/elements/1.1/description',
         'attribute': 'description',
         'label': 'Description',
         'multiple_allowed': False,
@@ -169,12 +169,12 @@ class OmexMetadataSchema(str, enum.Enum):
         'has_label': False,
         'required': False,
     },
-    'http://dublincore.org/specifications/dublin-core/dcmi-terms/source': {
+    'http://purl.org/dc/elements/1.1/source': {
         'namespace': {
             'prefix': 'dc',
-            'uri': 'http://dublincore.org/specifications/dublin-core/dcmi-terms/',
+            'uri': 'http://purl.org/dc/elements/1.1/',
         },
-        'uri': 'http://dublincore.org/specifications/dublin-core/dcmi-terms/source',
+        'uri': 'http://purl.org/dc/elements/1.1/source',
         'attribute': 'sources',
         'label': 'Sources',
         'multiple_allowed': True,
@@ -234,12 +234,12 @@ class OmexMetadataSchema(str, enum.Enum):
         'has_label': True,
         'required': False,
     },
-    'http://dublincore.org/specifications/dublin-core/dcmi-terms/creator': {
+    'http://purl.org/dc/elements/1.1/creator': {
         'namespace': {
             'prefix': 'dc',
-            'uri': 'http://dublincore.org/specifications/dublin-core/dcmi-terms/',
+            'uri': 'http://purl.org/dc/elements/1.1/',
         },
-        'uri': 'http://dublincore.org/specifications/dublin-core/dcmi-terms/creator',
+        'uri': 'http://purl.org/dc/elements/1.1/creator',
         'attribute': 'creators',
         'label': 'Creators',
         'multiple_allowed': True,
@@ -247,12 +247,12 @@ class OmexMetadataSchema(str, enum.Enum):
         'has_label': True,
         'required': False,
     },
-    'http://dublincore.org/specifications/dublin-core/dcmi-terms/contributor': {
+    'http://purl.org/dc/elements/1.1/contributor': {
         'namespace': {
             'prefix': 'dc',
-            'uri': 'http://dublincore.org/specifications/dublin-core/dcmi-terms/',
+            'uri': 'http://purl.org/dc/elements/1.1/',
         },
-        'uri': 'http://dublincore.org/specifications/dublin-core/dcmi-terms/contributor',
+        'uri': 'http://purl.org/dc/elements/1.1/contributor',
         'attribute': 'contributors',
         'label': 'Contributors',
         'multiple_allowed': True,
@@ -286,12 +286,12 @@ class OmexMetadataSchema(str, enum.Enum):
         'has_label': True,
         'required': False,
     },
-    'http://dublincore.org/specifications/dublin-core/dcmi-terms/license': {
+    'http://purl.org/dc/elements/1.1/license': {
         'namespace': {
             'prefix': 'dc',
-            'uri': 'http://dublincore.org/specifications/dublin-core/dcmi-terms/',
+            'uri': 'http://purl.org/dc/elements/1.1/',
         },
-        'uri': 'http://dublincore.org/specifications/dublin-core/dcmi-terms/license',
+        'uri': 'http://purl.org/dc/elements/1.1/license',
         'attribute': 'license',
         'label': 'License',
         'multiple_allowed': False,
@@ -312,12 +312,12 @@ class OmexMetadataSchema(str, enum.Enum):
         'has_label': True,
         'required': False,
     },
-    'http://dublincore.org/specifications/dublin-core/dcmi-terms/created': {
+    'http://purl.org/dc/elements/1.1/created': {
         'namespace': {
             'prefix': 'dc',
-            'uri': 'http://dublincore.org/specifications/dublin-core/dcmi-terms/',
+            'uri': 'http://purl.org/dc/elements/1.1/',
         },
-        'uri': 'http://dublincore.org/specifications/dublin-core/dcmi-terms/created',
+        'uri': 'http://purl.org/dc/elements/1.1/created',
         'attribute': 'created',
         'label': 'Created',
         'multiple_allowed': False,
@@ -325,12 +325,12 @@ class OmexMetadataSchema(str, enum.Enum):
         'has_label': True,
         'required': False,
     },
-    'http://dublincore.org/specifications/dublin-core/dcmi-terms/modified': {
+    'http://purl.org/dc/elements/1.1/modified': {
         'namespace': {
             'prefix': 'dc',
-            'uri': 'http://dublincore.org/specifications/dublin-core/dcmi-terms/',
+            'uri': 'http://purl.org/dc/elements/1.1/',
         },
-        'uri': 'http://dublincore.org/specifications/dublin-core/dcmi-terms/modified',
+        'uri': 'http://purl.org/dc/elements/1.1/modified',
         'attribute': 'modified',
         'label': 'Modified',
         'multiple_allowed': True,
@@ -343,7 +343,7 @@ class OmexMetadataSchema(str, enum.Enum):
 BIOSIMULATIONS_NAMESPACE_PREFIX_MAP = {
     'http://biomodels.net/biology-qualifiers/': 'bqbiol',
     'http://biomodels.net/model-qualifiers/': 'biomodel',
-    'http://dublincore.org/specifications/dublin-core/dcmi-terms/': 'dc',
+    'http://purl.org/dc/elements/1.1/': 'dc',
     'http://prismstandard.org/namespaces/basic/2.0/': 'prism',
     'http://purl.org/dc/terms/': 'dcterms',
     'http://purl.org/spar/scoro/': 'scoro',
@@ -354,7 +354,7 @@ class OmexMetadataSchema(str, enum.Enum):
 }
 
 BIOSIMULATIONS_NAMESPACE_ALIASES = {
-    'http://purl.org/dc/elements/1.1/': 'http://dublincore.org/specifications/dublin-core/dcmi-terms/',
+    'http://dublincore.org/specifications/dublin-core/dcmi-terms/': 'http://purl.org/dc/elements/1.1/',
     'http://sempublishing.sourceforge.net/scoro/': 'http://purl.org/spar/scoro/',
 }
 
diff --git a/biosimulators_utils/omex_meta/io.py b/biosimulators_utils/omex_meta/io.py
index 198552d8..92811c3a 100644
--- a/biosimulators_utils/omex_meta/io.py
+++ b/biosimulators_utils/omex_meta/io.py
@@ -652,7 +652,7 @@ def parse_triples_to_schema(cls, triples, combine_archive_uri):
                         }
                         for sub_el in el['value'].get('other', []):
                             if (
-                                sub_el['predicate'] == 'http://dublincore.org/specifications/dublin-core/dcmi-terms/identifier'
+                                sub_el['predicate'] == 'http://purl.org/dc/elements/1.1/identifier'
                                 and 'uri' in sub_el['value']
                             ):
                                 value['uri'] = sub_el['value']['uri']
@@ -729,13 +729,13 @@ def parse_triples_to_schema(cls, triples, combine_archive_uri):
                 }
                 for el in other_md['value'].get('description', []):
                     if (
-                        el['predicate'] == 'http://dublincore.org/specifications/dublin-core/dcmi-terms/description'
+                        el['predicate'] == 'http://purl.org/dc/elements/1.1/description'
                         and 'label' in el['value']
                     ):
                         value['attribute']['label'] = el['value']['label']
                 for el in other_md['value'].get('other', []):
                     if (
-                        el['predicate'] == 'http://dublincore.org/specifications/dublin-core/dcmi-terms/identifier'
+                        el['predicate'] == 'http://purl.org/dc/elements/1.1/identifier'
                         and 'uri' in el['value']
                     ):
                         value['value']['uri'] = el['value']['uri']
@@ -794,7 +794,7 @@ def run(self, el_metadatas, filename, config=None):
         local_id = 0
 
         namespaces = {
-            'dc': rdflib.Namespace('http://dublincore.org/specifications/dublin-core/dcmi-terms/'),
+            'dc': rdflib.Namespace('http://purl.org/dc/elements/1.1/'),
             'dcterms': rdflib.Namespace('http://purl.org/dc/terms/'),
             'foaf': rdflib.Namespace('http://xmlns.com/foaf/0.1/'),
             'rdfs': rdflib.Namespace('http://www.w3.org/2000/01/rdf-schema#'),
@@ -839,8 +839,8 @@ def run(self, el_metadatas, filename, config=None):
                             ))
 
                         if predicate_type['uri'] in [
-                            'http://dublincore.org/specifications/dublin-core/dcmi-terms/creator',
-                            'http://dublincore.org/specifications/dublin-core/dcmi-terms/contributor',
+                            'http://purl.org/dc/elements/1.1/creator',
+                            'http://purl.org/dc/elements/1.1/contributor',
                         ]:
                             if value.get('uri', None) is not None:
                                 if value['uri'].lower().startswith('mailto:'):
diff --git a/tests/fixtures/omex-metadata/abbrev.rdf b/tests/fixtures/omex-metadata/abbrev.rdf
index 68ca0eeb..c446db92 100644
--- a/tests/fixtures/omex-metadata/abbrev.rdf
+++ b/tests/fixtures/omex-metadata/abbrev.rdf
@@ -3,7 +3,7 @@
     xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
     xmlns:bqbiol="http://biomodels.net/biology-qualifiers/"
     xmlns:bqmodel="http://biomodels.net/model-qualifiers/"
-    xmlns:dc="http://dublincore.org/specifications/dublin-core/dcmi-terms/"
+    xmlns:dc="http://purl.org/dc/elements/1.1/"
     xmlns:foaf="http://xmlns.com/foaf/0.1/"
     xmlns:prism="http://prismstandard.org/namespaces/basic/2.0/"
     xmlns:scoro="http://purl.org/spar/scoro/"
diff --git a/tests/fixtures/omex-metadata/biosimulations-abbrev-third-a.rdf b/tests/fixtures/omex-metadata/biosimulations-abbrev-third-a.rdf
index 775badc0..7c3b9ee2 100644
--- a/tests/fixtures/omex-metadata/biosimulations-abbrev-third-a.rdf
+++ b/tests/fixtures/omex-metadata/biosimulations-abbrev-third-a.rdf
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <rdf:RDF
-    xmlns:dc="http://dublincore.org/specifications/dublin-core/dcmi-terms/"
+    xmlns:dc="http://purl.org/dc/elements/1.1/"
     xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
 >
   <rdf:Description rdf:about="http://omex-library.org/BioSim0001.omex">
diff --git a/tests/fixtures/omex-metadata/biosimulations-abbrev-third-b.rdf b/tests/fixtures/omex-metadata/biosimulations-abbrev-third-b.rdf
index d52881e7..7fbbd8db 100644
--- a/tests/fixtures/omex-metadata/biosimulations-abbrev-third-b.rdf
+++ b/tests/fixtures/omex-metadata/biosimulations-abbrev-third-b.rdf
@@ -3,7 +3,7 @@
     xmlns:bqbiol="http://biomodels.net/biology-qualifiers/"
     xmlns:bqmodel="http://biomodels.net/model-qualifiers/"
     xmlns:collex="http://www.collex.org/schema#"
-    xmlns:dc="http://dublincore.org/specifications/dublin-core/dcmi-terms/"
+    xmlns:dc="http://purl.org/dc/elements/1.1/"
     xmlns:dcterms="http://purl.org/dc/terms/"
     xmlns:foaf="http://xmlns.com/foaf/0.1/"
     xmlns:om="http://ontology.eil.utoronto.ca/icity/OM/"
diff --git a/tests/fixtures/omex-metadata/biosimulations-abbrev-third-c.rdf b/tests/fixtures/omex-metadata/biosimulations-abbrev-third-c.rdf
index 698a5bfa..4433c82f 100644
--- a/tests/fixtures/omex-metadata/biosimulations-abbrev-third-c.rdf
+++ b/tests/fixtures/omex-metadata/biosimulations-abbrev-third-c.rdf
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
 <rdf:RDF
     xmlns:bqmodel="http://biomodels.net/model-qualifiers/"
-    xmlns:dc="http://dublincore.org/specifications/dublin-core/dcmi-terms/"
+    xmlns:dc="http://purl.org/dc/elements/1.1/"
     xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
     xmlns:rdfs="http://www.w3.org/2000/01/rdf-schema#"
 >
diff --git a/tests/fixtures/omex-metadata/biosimulations-abbrev.rdf b/tests/fixtures/omex-metadata/biosimulations-abbrev.rdf
index 9c763a01..8f92680c 100644
--- a/tests/fixtures/omex-metadata/biosimulations-abbrev.rdf
+++ b/tests/fixtures/omex-metadata/biosimulations-abbrev.rdf
@@ -3,7 +3,7 @@
     xmlns:bqbiol="http://biomodels.net/biology-qualifiers/"
     xmlns:bqmodel="http://biomodels.net/model-qualifiers/"
     xmlns:collex="http://www.collex.org/schema#"
-    xmlns:dc="http://dublincore.org/specifications/dublin-core/dcmi-terms/"
+    xmlns:dc="http://purl.org/dc/elements/1.1/"
     xmlns:dcterms="http://purl.org/dc/terms/"
     xmlns:foaf="http://xmlns.com/foaf/0.1/"
     xmlns:om="http://ontology.eil.utoronto.ca/icity/OM/"
diff --git a/tests/fixtures/omex-metadata/biosimulations-with-file-annotations.rdf b/tests/fixtures/omex-metadata/biosimulations-with-file-annotations.rdf
index 08af121c..4153826c 100644
--- a/tests/fixtures/omex-metadata/biosimulations-with-file-annotations.rdf
+++ b/tests/fixtures/omex-metadata/biosimulations-with-file-annotations.rdf
@@ -3,7 +3,7 @@
     xmlns:bqbiol="http://biomodels.net/biology-qualifiers/"
     xmlns:bqmodel="http://biomodels.net/model-qualifiers/"
     xmlns:collex="http://www.collex.org/schema#"
-    xmlns:dc="http://dublincore.org/specifications/dublin-core/dcmi-terms/"
+    xmlns:dc="http://purl.org/dc/elements/1.1/"
     xmlns:dcterms="http://purl.org/dc/terms/"
     xmlns:foaf="http://xmlns.com/foaf/0.1/"
     xmlns:om="http://ontology.eil.utoronto.ca/icity/OM/"
diff --git a/tests/fixtures/omex-metadata/biosimulations.rdf b/tests/fixtures/omex-metadata/biosimulations.rdf
index 3f5ee618..64dcdbbf 100644
--- a/tests/fixtures/omex-metadata/biosimulations.rdf
+++ b/tests/fixtures/omex-metadata/biosimulations.rdf
@@ -3,7 +3,7 @@
     xmlns:bqbiol="http://biomodels.net/biology-qualifiers/"
     xmlns:bqmodel="http://biomodels.net/model-qualifiers/"
     xmlns:collex="http://www.collex.org/schema#"
-    xmlns:dc="http://dublincore.org/specifications/dublin-core/dcmi-terms/"
+    xmlns:dc="http://purl.org/dc/elements/1.1/"
     xmlns:dcterms="http://purl.org/dc/terms/"
     xmlns:foaf="http://xmlns.com/foaf/0.1/"
     xmlns:om="http://ontology.eil.utoronto.ca/icity/OM/"
diff --git a/tests/fixtures/omex-metadata/invalid-thumbnail-uri.rdf b/tests/fixtures/omex-metadata/invalid-thumbnail-uri.rdf
index 25e62d5c..775f98f7 100644
--- a/tests/fixtures/omex-metadata/invalid-thumbnail-uri.rdf
+++ b/tests/fixtures/omex-metadata/invalid-thumbnail-uri.rdf
@@ -3,7 +3,7 @@
     xmlns:bqbiol="http://biomodels.net/biology-qualifiers/"
     xmlns:bqmodel="http://biomodels.net/model-qualifiers/"
     xmlns:collex="http://www.collex.org/schema#"
-    xmlns:dc="http://dublincore.org/specifications/dublin-core/dcmi-terms/"
+    xmlns:dc="http://purl.org/dc/elements/1.1/"
     xmlns:dcterms="http://purl.org/dc/terms/"
     xmlns:foaf="http://xmlns.com/foaf/0.1/"
     xmlns:om="http://ontology.eil.utoronto.ca/icity/OM/"
diff --git a/tests/fixtures/omex-metadata/invalid.rdf b/tests/fixtures/omex-metadata/invalid.rdf
index d2c1324b..5b8f5831 100644
--- a/tests/fixtures/omex-metadata/invalid.rdf
+++ b/tests/fixtures/omex-metadata/invalid.rdf
@@ -3,7 +3,7 @@
     xmlns:bqbiol="http://biomodels.net/biology-qualifiers/"
     xmlns:bqmodel="http://biomodels.net/model-qualifiers/"
     xmlns:collex="http://www.collex.org/schema#"
-    xmlns:dc="http://dublincore.org/specifications/dublin-core/dcmi-terms/"
+    xmlns:dc="http://purl.org/dc/elements/1.1/"
     xmlns:dcterms="http://purl.org/dc/terms/"
     xmlns:foaf="http://xmlns.com/foaf/0.1/"
     xmlns:om="http://ontology.eil.utoronto.ca/icity/OM/"
diff --git a/tests/fixtures/omex-metadata/malformed.rdf b/tests/fixtures/omex-metadata/malformed.rdf
index 45106636..5f3681a3 100644
--- a/tests/fixtures/omex-metadata/malformed.rdf
+++ b/tests/fixtures/omex-metadata/malformed.rdf
@@ -3,7 +3,7 @@
     xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
     xmlns:bqbiol="http://biomodels.net/biology-qualifiers/"
     xmlns:bqmodel="http://biomodels.net/model-qualifiers/"
-    xmlns:dc="http://dublincore.org/specifications/dublin-core/dcmi-terms/"
+    xmlns:dc="http://purl.org/dc/elements/1.1/"
     xmlns:foaf="http://xmlns.com/foaf/0.1/"
     xmlns:collex="http://www.collex.org/schema#"
 >
diff --git a/tests/fixtures/omex-metadata/missing-label-2.rdf b/tests/fixtures/omex-metadata/missing-label-2.rdf
index 3e5d0088..de2e638b 100644
--- a/tests/fixtures/omex-metadata/missing-label-2.rdf
+++ b/tests/fixtures/omex-metadata/missing-label-2.rdf
@@ -3,7 +3,7 @@
     xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
     xmlns:bqbiol="http://biomodels.net/biology-qualifiers/"
     xmlns:bqmodel="http://biomodels.net/model-qualifiers/"
-    xmlns:dc="http://dublincore.org/specifications/dublin-core/dcmi-terms/"
+    xmlns:dc="http://purl.org/dc/elements/1.1/"
     xmlns:foaf="http://xmlns.com/foaf/0.1/"
     xmlns:prism="http://prismstandard.org/namespaces/basic/2.0/"
     xmlns:scoro="http://purl.org/spar/scoro/"
diff --git a/tests/fixtures/omex-metadata/missing-label.rdf b/tests/fixtures/omex-metadata/missing-label.rdf
index d1d3b2e1..5a63e2fa 100644
--- a/tests/fixtures/omex-metadata/missing-label.rdf
+++ b/tests/fixtures/omex-metadata/missing-label.rdf
@@ -3,7 +3,7 @@
     xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
     xmlns:bqbiol="http://biomodels.net/biology-qualifiers/"
     xmlns:bqmodel="http://biomodels.net/model-qualifiers/"
-    xmlns:dc="http://dublincore.org/specifications/dublin-core/dcmi-terms/"
+    xmlns:dc="http://purl.org/dc/elements/1.1/"
     xmlns:foaf="http://xmlns.com/foaf/0.1/"
     xmlns:prism="http://prismstandard.org/namespaces/basic/2.0/"
     xmlns:scoro="http://purl.org/spar/scoro/"
diff --git a/tests/fixtures/omex-metadata/missing-required.rdf b/tests/fixtures/omex-metadata/missing-required.rdf
index 132c94a7..6d74789f 100644
--- a/tests/fixtures/omex-metadata/missing-required.rdf
+++ b/tests/fixtures/omex-metadata/missing-required.rdf
@@ -3,7 +3,7 @@
     xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
     xmlns:bqbiol="http://biomodels.net/biology-qualifiers/"
     xmlns:bqmodel="http://biomodels.net/model-qualifiers/"
-    xmlns:dc="http://dublincore.org/specifications/dublin-core/dcmi-terms/"
+    xmlns:dc="http://purl.org/dc/elements/1.1/"
     xmlns:foaf="http://xmlns.com/foaf/0.1/"
     xmlns:prism="http://prismstandard.org/namespaces/basic/2.0/"
     xmlns:scoro="http://purl.org/spar/scoro/"
diff --git a/tests/fixtures/omex-metadata/missing-thumbnail-uri.rdf b/tests/fixtures/omex-metadata/missing-thumbnail-uri.rdf
index 8b4e83a7..7d17ee0c 100644
--- a/tests/fixtures/omex-metadata/missing-thumbnail-uri.rdf
+++ b/tests/fixtures/omex-metadata/missing-thumbnail-uri.rdf
@@ -3,7 +3,7 @@
     xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
     xmlns:bqbiol="http://biomodels.net/biology-qualifiers/"
     xmlns:bqmodel="http://biomodels.net/model-qualifiers/"
-    xmlns:dc="http://dublincore.org/specifications/dublin-core/dcmi-terms/"
+    xmlns:dc="http://purl.org/dc/elements/1.1/"
     xmlns:foaf="http://xmlns.com/foaf/0.1/"
     xmlns:prism="http://prismstandard.org/namespaces/basic/2.0/"
     xmlns:scoro="http://purl.org/spar/scoro/"
diff --git a/tests/fixtures/omex-metadata/missing-uri.rdf b/tests/fixtures/omex-metadata/missing-uri.rdf
index c1433086..274b561d 100644
--- a/tests/fixtures/omex-metadata/missing-uri.rdf
+++ b/tests/fixtures/omex-metadata/missing-uri.rdf
@@ -3,7 +3,7 @@
     xmlns:bqbiol="http://biomodels.net/biology-qualifiers/"
     xmlns:bqmodel="http://biomodels.net/model-qualifiers/"
     xmlns:collex="http://www.collex.org/schema#"
-    xmlns:dc="http://dublincore.org/specifications/dublin-core/dcmi-terms/"
+    xmlns:dc="http://purl.org/dc/elements/1.1/"
     xmlns:dcterms="http://purl.org/dc/terms/"
     xmlns:foaf="http://xmlns.com/foaf/0.1/"
     xmlns:om="http://ontology.eil.utoronto.ca/icity/OM/"
diff --git a/tests/fixtures/omex-metadata/multiple-roots.rdf b/tests/fixtures/omex-metadata/multiple-roots.rdf
index 9bdf6434..2c46e113 100644
--- a/tests/fixtures/omex-metadata/multiple-roots.rdf
+++ b/tests/fixtures/omex-metadata/multiple-roots.rdf
@@ -3,7 +3,7 @@
     xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
     xmlns:bqbiol="http://biomodels.net/biology-qualifiers/"
     xmlns:bqmodel="http://biomodels.net/model-qualifiers/"
-    xmlns:dc="http://dublincore.org/specifications/dublin-core/dcmi-terms/"
+    xmlns:dc="http://purl.org/dc/elements/1.1/"
     xmlns:foaf="http://xmlns.com/foaf/0.1/"
     xmlns:prism="http://prismstandard.org/namespaces/basic/2.0/"
     xmlns:scoro="http://purl.org/spar/scoro/"
diff --git a/tests/fixtures/omex-metadata/multiple-thumbnails.rdf b/tests/fixtures/omex-metadata/multiple-thumbnails.rdf
index b9a73462..46c161f3 100644
--- a/tests/fixtures/omex-metadata/multiple-thumbnails.rdf
+++ b/tests/fixtures/omex-metadata/multiple-thumbnails.rdf
@@ -3,7 +3,7 @@
     xmlns:bqbiol="http://biomodels.net/biology-qualifiers/"
     xmlns:bqmodel="http://biomodels.net/model-qualifiers/"
     xmlns:collex="http://www.collex.org/schema#"
-    xmlns:dc="http://dublincore.org/specifications/dublin-core/dcmi-terms/"
+    xmlns:dc="http://purl.org/dc/elements/1.1/"
     xmlns:dcterms="http://purl.org/dc/terms/"
     xmlns:foaf="http://xmlns.com/foaf/0.1/"
     xmlns:om="http://ontology.eil.utoronto.ca/icity/OM/"
diff --git a/tests/fixtures/omex-metadata/no-root.rdf b/tests/fixtures/omex-metadata/no-root.rdf
index 417e4b9b..2c6f082f 100644
--- a/tests/fixtures/omex-metadata/no-root.rdf
+++ b/tests/fixtures/omex-metadata/no-root.rdf
@@ -3,7 +3,7 @@
     xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
     xmlns:bqbiol="http://biomodels.net/biology-qualifiers/"
     xmlns:bqmodel="http://biomodels.net/model-qualifiers/"
-    xmlns:dc="http://dublincore.org/specifications/dublin-core/dcmi-terms/"
+    xmlns:dc="http://purl.org/dc/elements/1.1/"
     xmlns:foaf="http://xmlns.com/foaf/0.1/"
     xmlns:prism="http://prismstandard.org/namespaces/basic/2.0/"
     xmlns:scoro="http://purl.org/spar/scoro/"
diff --git a/tests/fixtures/omex-metadata/too-many-objects.rdf b/tests/fixtures/omex-metadata/too-many-objects.rdf
index 9bce07ab..bd881a1b 100644
--- a/tests/fixtures/omex-metadata/too-many-objects.rdf
+++ b/tests/fixtures/omex-metadata/too-many-objects.rdf
@@ -3,7 +3,7 @@
     xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
     xmlns:bqbiol="http://biomodels.net/biology-qualifiers/"
     xmlns:bqmodel="http://biomodels.net/model-qualifiers/"
-    xmlns:dc="http://dublincore.org/specifications/dublin-core/dcmi-terms/"
+    xmlns:dc="http://purl.org/dc/elements/1.1/"
     xmlns:foaf="http://xmlns.com/foaf/0.1/"
     xmlns:prism="http://prismstandard.org/namespaces/basic/2.0/"
     xmlns:scoro="http://purl.org/spar/scoro/"
diff --git a/tests/fixtures/omex-metadata/warning.rdf b/tests/fixtures/omex-metadata/warning.rdf
index fc245d04..9b332b1c 100644
--- a/tests/fixtures/omex-metadata/warning.rdf
+++ b/tests/fixtures/omex-metadata/warning.rdf
@@ -3,7 +3,7 @@
     xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
     xmlns:bqbiol="http://biomodels.net/biology-qualifiers/"
     xmlns:bqmodel="http://biomodels.net/model-qualifiers/"
-    xmlns:dc="http://dublincore.org/specifications/dublin-core/dcmi-terms/"
+    xmlns:dc="http://purl.org/dc/elements/1.1/"
     xmlns:foaf="http://xmlns.com/foaf/0.1/"
     xmlns:collex="http://www.collex.org/schema#"
 >