diff --git a/app/templates/views/dashboard/_jobs.html b/app/templates/views/dashboard/_jobs.html
index cc9f84ac6..9efb9f777 100644
--- a/app/templates/views/dashboard/_jobs.html
+++ b/app/templates/views/dashboard/_jobs.html
@@ -69,18 +69,18 @@
           {% endfor %}
         </p>
       {% else %}
-        <div class="grid-row">
-          <div class="column-one-third">
+        <div class="govuk-grid-row">
+          <div class="govuk-grid-column-one-third">
             {{ big_number(
               item.notifications_sending,
               smallest=True,
               label='sending',
             ) }}
           </div>
-          <div class="column-one-third">
+          <div class="govuk-grid-column-one-third">
         {{ big_number(item.notifications_delivered, smallest=True, label='delivered') }}
       </div>
-      <div class="column-one-third">
+      <div class="govuk-grid-column-one-third">
         {{ big_number(item.notifications_failed, smallest=True, label='failed') }}
       </div></div>
 
diff --git a/app/templates/views/returned-letter-summary.html b/app/templates/views/returned-letter-summary.html
index 47ec7d585..b38591297 100644
--- a/app/templates/views/returned-letter-summary.html
+++ b/app/templates/views/returned-letter-summary.html
@@ -8,7 +8,7 @@
 {% endblock %}
 
 {% block maincolumn_content %}
-<div class="grid-row">
+<div class="govuk-grid-row">
   <div class="govuk-grid-column-five-sixths">
     {{ page_header(
       'Returned letters',