diff --git a/check_datasets.py b/check_datasets.py
index dfb1388..2aea7e1 100644
--- a/check_datasets.py
+++ b/check_datasets.py
@@ -1,13 +1,20 @@
 #!/bin/env python3
+import datetime
+
 from rdflib import ConjunctiveGraph, Graph
 from rdflib.namespace import RDF, Namespace, DCTERMS
 
 DCAT = Namespace('http://www.w3.org/ns/dcat#')
+GDP = Namespace('http://gss-data.org.uk/def/gdp#')
 
 ds = ConjunctiveGraph('Sleepycat')
 ds.open('datasets.db')
 print(f'Datasets store has {len(ds)} triples')
-print(f' and {len(list(ds.triples((None, RDF.type, DCAT.Dataset))))} datasets.')
+datasets = set(ds.subjects(RDF.type, DCAT.Dataset))
+datasets.update(ds.subjects(RDF.type, GDP.NationalStatistics))
+datasets.update(ds.subjects(RDF.type, GDP.OfficialStatistics))
+
+print(f' and {len(datasets)} datasets.')
 
 gss = Graph('SPARQLStore', identifier='http://gss-data.org.uk')
 gss.open("http://gss-data.org.uk/sparql")
@@ -22,9 +29,12 @@
       dct:issued ?issued .
 }"""):
     latest_pub_date = ds.value(subject=dataset.url, predicate=DCTERMS.issued, any=False)
+    gss_issued = dataset.issued.value
+    if type(gss_issued) == datetime.datetime:
+        gss_issued = gss_issued.date()
     if latest_pub_date is None:
         print(f"Dataset {dataset.url} not listed in gov.uk statistical datasets.")
-    elif latest_pub_date != dataset.issued:
+    elif latest_pub_date.value.date() > gss_issued:
         print(f"Dataset {dataset.url} has more recent update.")
     else:
         print(f"Dataset {dataset.url} is up to date.")