diff --git a/templates/zerver/emails/email_base_default.source.html b/templates/zerver/emails/email_base_default.source.html
index 021a7fcdaa..883afd8e5f 100644
--- a/templates/zerver/emails/email_base_default.source.html
+++ b/templates/zerver/emails/email_base_default.source.html
@@ -14,7 +14,9 @@
                         <a href="#" class="illustration">
                             {% block illustration %}{% endblock %}
                         </a>
-                        {% block preheader %}{% endblock %}
+                        <span class="preheader">
+                            {% block preheader %}{% endblock %}
+                        </span>
                         <table class="main">
                             <tr>
                                 <td class="wrapper">
diff --git a/version.py b/version.py
index a802b7ef70..7437347912 100644
--- a/version.py
+++ b/version.py
@@ -8,4 +8,4 @@ ZULIP_VERSION = "1.8.1+git"
 # Typically, adding a dependency only requires a minor version bump, and
 # removing a dependency requires a major version bump.
 
-PROVISION_VERSION = '25.1'
+PROVISION_VERSION = '25.2'