diff --git a/database/schemas/data.sql b/database/schemas/data.sql
index f63c3b3..6d93e8c 100644
--- a/database/schemas/data.sql
+++ b/database/schemas/data.sql
@@ -2,5 +2,6 @@ CREATE TABLE IF NOT EXISTS users (
     user_id INTEGER PRIMARY KEY,
     chart BOOLEAN DEFAULT 1,
     chart_period TEXT DEFAULT 'month',
-    lang TEXT DEFAULT 'en'
+    lang TEXT DEFAULT 'en',
+    chart_backend TEXT DEFAULT 'matplotlib'
 );