diff --git a/ext_emconf.php b/ext_emconf.php
index e11ef07..6a4a502 100644
--- a/ext_emconf.php
+++ b/ext_emconf.php
@@ -26,6 +26,7 @@
         [
             'depends' =>
                 [
+                    'typo3' => '8.7.20-9.5.99',
                     'lfeditor' => '5.0.0-5.1.99',
                 ],
             'conflicts' =>