diff --git a/phpBB/docs/events.md b/phpBB/docs/events.md
index d05cb876fd..d8606c7e4c 100644
--- a/phpBB/docs/events.md
+++ b/phpBB/docs/events.md
@@ -1597,6 +1597,20 @@ navbar_header_username_prepend
 * Since: 3.1.0-RC1
 * Purpose: Add text and HTMl before the username shown in the navbar.
 
+notification_dropdown_footer_after
+===
+* Locations:
+    + styles/prosilver/template/notification_dropdown.html
+* Since: 3.3.12-prep-release
+* Purpose: Add content after notifications list footer.
+
+notification_dropdown_footer_before
+===
+* Locations:
+    + styles/prosilver/template/notification_dropdown.html
+* Since: 3.3.12-prep-release
+* Purpose: Add content before notifications list footer.
+
 overall_footer_after
 ===
 * Locations:
diff --git a/phpBB/phpbb/event/md_exporter.php b/phpBB/phpbb/event/md_exporter.php
index 1a16a17413..7182ce697f 100644
--- a/phpBB/phpbb/event/md_exporter.php
+++ b/phpBB/phpbb/event/md_exporter.php
@@ -489,7 +489,7 @@ class md_exporter
 	*/
 	public function validate_version($version)
 	{
-		return preg_match('#^\d+\.\d+\.\d+(?:-(?:a|b|RC|pl)\d+)?$#', $version);
+		return preg_match('#^\d+\.\d+\.\d+(?:-(?:a|b|RC|pl)\d+|(?:-prep-release))?$#', $version);
 	}
 
 	/**
diff --git a/phpBB/styles/prosilver/template/notification_dropdown.html b/phpBB/styles/prosilver/template/notification_dropdown.html
index e444d8fb90..281e5c9a8f 100644
--- a/phpBB/styles/prosilver/template/notification_dropdown.html
+++ b/phpBB/styles/prosilver/template/notification_dropdown.html
@@ -40,8 +40,10 @@
 			<!-- END notifications -->
 		</ul>
 
+		{% EVENT notification_dropdown_footer_before %}
 		<div class="footer">
 			<a href="{U_VIEW_ALL_NOTIFICATIONS}"><span>{L_SEE_ALL}</span></a>
 		</div>
+		{% EVENT notification_dropdown_footer_after %}
 	</div>
 </div>