diff --git a/store/migration/mysql/0.25/00__s3_reference_length.sql b/store/migration/mysql/0.25/00__s3_reference_length.sql
new file mode 100644
index 00000000..397f0000
--- /dev/null
+++ b/store/migration/mysql/0.25/00__s3_reference_length.sql
@@ -0,0 +1,3 @@
+-- https://github.com/usememos/memos/issues/4322
+
+ALTER TABLE `resource` MODIFY `reference` TEXT NOT NULL DEFAULT ('');
diff --git a/store/migration/mysql/LATEST.sql b/store/migration/mysql/LATEST.sql
index 989b73a0..dbd76612 100644
--- a/store/migration/mysql/LATEST.sql
+++ b/store/migration/mysql/LATEST.sql
@@ -77,7 +77,7 @@ CREATE TABLE `resource` (
   `size` INT NOT NULL DEFAULT '0',
   `memo_id` INT DEFAULT NULL,
   `storage_type` VARCHAR(256) NOT NULL DEFAULT '',
-  `reference` VARCHAR(256) NOT NULL DEFAULT '',
+  `reference` TEXT NOT NULL DEFAULT (''),
   `payload` TEXT NOT NULL
 );