diff --git a/phpBB/adm/style/acp_ext_details.html b/phpBB/adm/style/acp_ext_details.html
index 830c2e3cb4..465a89e17a 100644
--- a/phpBB/adm/style/acp_ext_details.html
+++ b/phpBB/adm/style/acp_ext_details.html
@@ -136,4 +136,5 @@
 		<!-- END meta_authors -->
 	</fieldset>
 
+	<!-- EVENT acp_ext_details_end -->
 <!-- INCLUDE overall_footer.html -->
diff --git a/phpBB/docs/events.md b/phpBB/docs/events.md
index 0ebaf8f3e0..1cc0ccbdb4 100644
--- a/phpBB/docs/events.md
+++ b/phpBB/docs/events.md
@@ -58,6 +58,12 @@ acp_email_options_after
 * Since: 3.1.2-RC1
 * Purpose: Add settings to mass email form
 
+acp_ext_details_end
+===
+* Location: adm/style/acp_ext_details.html
+* Since: 3.1.11-RC1
+* Purpose: Add more detailed information on extension after the available information.
+
 acp_ext_list_disabled_title_after
 ===
 * Location: adm/style/acp_ext_list.html