diff --git a/iati_standard/models.py b/iati_standard/models.py
index 8d2f5fb6..4cbbd2e0 100644
--- a/iati_standard/models.py
+++ b/iati_standard/models.py
@@ -406,25 +406,10 @@ class ActivityStandardPage(AbstractGithubPage):
 
     template = 'iati_standard/activity_standard_page.html'
 
-    def get_sitemap_urls(self, request=None):
-        """If it's an older version of the standard, we want it to have a lower priority."""
-        url = self.get_url(request)
-        if re.match(r"^\/\w+\/iati-standard\/", url) and not re.match(r"^\/\w+\/iati-standard\/203\/", url):
-            return [
-                {
-                    'location': self.get_full_url(request),
-                    'lastmod': (self.last_published_at or self.latest_revision_created_at),
-                    'changefreq': 'yearly',
-                    'priority': .1,
-                }
-            ]
-        else:
-            return [
-                {
-                    'location': self.get_full_url(request),
-                    'lastmod': (self.last_published_at or self.latest_revision_created_at),
-                }
-            ]
+    def is_older_version_of_standard(self):
+        """Is it an older version of the standard?"""
+        url = self.get_url()
+        return re.match(r"^\/\w+\/iati-standard\/\d", url) and not re.match(r"^\/\w+\/iati-standard\/203\/", url)
 
 
 class StandardGuidancePage(AbstractGithubPage):
diff --git a/iati_standard/templates/iati_standard/activity_standard_page.html b/iati_standard/templates/iati_standard/activity_standard_page.html
index cd293fd6..e4567f20 100644
--- a/iati_standard/templates/iati_standard/activity_standard_page.html
+++ b/iati_standard/templates/iati_standard/activity_standard_page.html
@@ -23,6 +23,10 @@
 </style>
 {% endblock %}
 
+{% block html_header_seo %}
+{% if page.is_older_version_of_standard %}<meta name="robots" content="noindex">{% endif %}
+{% endblock %}
+
 {% block content %}
     {% get_current_language as LANGUAGE_CODE %}
     <div class="hero hero--minor">