diff --git a/config/installer.php b/config/installer.php
index b5beac9d..d0b41db8 100644
--- a/config/installer.php
+++ b/config/installer.php
@@ -23,6 +23,7 @@ return [
         'tokenizer',
         'json',
         'curl',
+        'dom',
     ],
 
     // Make sure these are writable