diff --git a/nidm/experiment/Utils.py b/nidm/experiment/Utils.py
index f34bbb42..96aa137c 100644
--- a/nidm/experiment/Utils.py
+++ b/nidm/experiment/Utils.py
@@ -291,7 +291,7 @@ def read_nidm(nidmDoc):
             prefix nidm: <http://purl.org/nidash/nidm#>  
             select distinct ?uuid
             where {
-                ?uuid a nidm:DataElement .
+                ?uuid a/rdfs:subClassOf* nidm:DataElement .
      			
             }
             '''
diff --git a/nidm/version.py b/nidm/version.py
index 411d05cc..34aedc61 100644
--- a/nidm/version.py
+++ b/nidm/version.py
@@ -4,7 +4,7 @@
 # Format expected by setup.py and doc/source/conf.py: string of form "X.Y.Z"
 _version_major = 3
 _version_minor = 9 
-_version_micro = '3'  # use '' for first of series, number for 1 and above
+_version_micro = '4'  # use '' for first of series, number for 1 and above
 _version_extra = ''
 # _version_extra = ''  # Uncomment this for full releases