diff --git a/modules/languages/siren-web-mode.el b/modules/languages/siren-web-mode.el
index 08b9793..7ff9735 100644
--- a/modules/languages/siren-web-mode.el
+++ b/modules/languages/siren-web-mode.el
@@ -27,6 +27,7 @@
   (web-mode-code-indent-offset 2)
   (web-mode-css-indent-offset 2)
   (web-mode-markup-indent-offset 2)
+  (web-mode-attr-indent-offset 2)
   (web-mode-sql-indent-offset 2)
   (web-mode-engines-alist '(("go" . "\\.tpl\\'")))