diff --git a/docs/intro_to_sparql.rst b/docs/intro_to_sparql.rst
index 9de055413..f2cbf5a69 100644
--- a/docs/intro_to_sparql.rst
+++ b/docs/intro_to_sparql.rst
@@ -140,7 +140,7 @@ The ``SERVICE`` keyword of SPARQL 1.1 can send a query to a remote SPARQL endpoi
         """
         SELECT ?s
         WHERE {
-          SERVICE <http://dbpedia.org/sparql> {
+          SERVICE <https://dbpedia.org/sparql> {
             ?s a ?o .
           }
         }