diff --git a/shared/src/commonMain/sqldelight/bou/amine/apps/readerforselfossv2/dao/1.sqm b/shared/src/commonMain/sqldelight/bou/amine/apps/readerforselfossv2/dao/1.sqm
index 1a71de6..6f9532c 100644
--- a/shared/src/commonMain/sqldelight/bou/amine/apps/readerforselfossv2/dao/1.sqm
+++ b/shared/src/commonMain/sqldelight/bou/amine/apps/readerforselfossv2/dao/1.sqm
@@ -1 +1 @@
-ALTER TABLE ITEM ADD COLUMN `author` TEXT;
\ No newline at end of file
+ALTER TABLE ITEM ADD COLUMN `author` TEXT NOT NULL;
\ No newline at end of file
diff --git a/shared/src/commonMain/sqldelight/bou/amine/apps/readerforselfossv2/dao/2.sqm b/shared/src/commonMain/sqldelight/bou/amine/apps/readerforselfossv2/dao/2.sqm
new file mode 100644
index 0000000..bc2dc04
--- /dev/null
+++ b/shared/src/commonMain/sqldelight/bou/amine/apps/readerforselfossv2/dao/2.sqm
@@ -0,0 +1,6 @@
+CREATE TABLE ITEM_BACKUP AS SELECT `id`, `datetime`, `title`, `content`,
+ `unread`, `starred`, `thumbnail`, `icon`, `link`, `sourcetitle`,
+ `tags` FROM ITEM;
+ALTER TABLE ITEM_BACKUP ADD COLUMN `author` TEXT;
+DROP TABLE ITEM;
+ALTER TABLE ITEM_BACKUP RENAME TO ITEM;
\ No newline at end of file