diff --git a/src/main/resources/db/migration-mysql/V4__download_log_modify_ip_field_length.sql b/src/main/resources/db/migration-mysql/V4__download_log_modify_ip_field_length.sql
new file mode 100644
index 0000000..ef2b706
--- /dev/null
+++ b/src/main/resources/db/migration-mysql/V4__download_log_modify_ip_field_length.sql
@@ -0,0 +1 @@
+alter table download_log modify ip varchar(64) null comment '访问 ip';
\ No newline at end of file
diff --git a/src/main/resources/db/migration-sqlite/V4__download_log_modify_ip_field_length.sql b/src/main/resources/db/migration-sqlite/V4__download_log_modify_ip_field_length.sql
new file mode 100644
index 0000000..37f45c5
--- /dev/null
+++ b/src/main/resources/db/migration-sqlite/V4__download_log_modify_ip_field_length.sql
@@ -0,0 +1,28 @@
+create table download_log_dg_tmp
+(
+    id          integer
+        primary key autoincrement,
+    path        text,
+    storage_key varchar(64),
+    create_time datetime,
+    ip          varchar(64),
+    user_agent  varchar(2048),
+    referer     varchar(2048),
+    short_key   varchar(255)
+);
+
+insert into download_log_dg_tmp(id, path, storage_key, create_time, ip, user_agent, referer, short_key)
+select id,
+       path,
+       storage_key,
+       create_time,
+       ip,
+       user_agent,
+       referer,
+       short_key
+from download_log;
+
+drop table download_log;
+
+alter table download_log_dg_tmp
+    rename to download_log;
\ No newline at end of file