diff --git a/lib/db/migrations/0027_add_default_theme.sql b/lib/db/migrations/0027_add_default_theme.sql
new file mode 100644
index 000000000..2b61135d5
--- /dev/null
+++ b/lib/db/migrations/0027_add_default_theme.sql
@@ -0,0 +1 @@
+ALTER TABLE "SiteSettings" ADD COLUMN IF NOT EXISTS "defaultTheme" varchar(16) NOT NULL DEFAULT 'system';
\ No newline at end of file