diff --git a/admin/tool/langimport/classes/controller.php b/admin/tool/langimport/classes/controller.php
index bf43258ae89..3ea368c9585 100644
--- a/admin/tool/langimport/classes/controller.php
+++ b/admin/tool/langimport/classes/controller.php
@@ -184,6 +184,8 @@ class controller {
 
         if ($updated) {
             $this->info[] = get_string('langupdatecomplete', 'tool_langimport');
+            // The strings have been changed so we need to purge their cache to ensure users see the changes.
+            get_string_manager()->reset_caches();
         } else {
             $this->info[] = get_string('nolangupdateneeded', 'tool_langimport');
         }