diff --git a/README.md b/README.md
index 8e2e48e369..c4d6a6550c 100644
--- a/README.md
+++ b/README.md
@@ -46,6 +46,8 @@ _✨ All in one 的 OpenAI 接口，整合各种 API 访问方式，开箱即用
 
 > **Warning**：使用 Docker 拉取的最新镜像可能是 `alpha` 版本，如果追求稳定性请手动指定版本。
 
+> **Warning**：从 `v0.3` 版本升级到 `v0.4` 版本需要手动迁移数据库，请手动执行[数据库迁移脚本](./bin/migration_v0.3-v0.4.sql)。
+
 ## 功能
 1. 支持多种 API 访问渠道，欢迎 PR 或提 issue 添加更多渠道：
    + [x] OpenAI 官方通道
diff --git a/bin/migration_v0.3-v0.4.sql b/bin/migration_v0.3-v0.4.sql
new file mode 100644
index 0000000000..e6103c29ac
--- /dev/null
+++ b/bin/migration_v0.3-v0.4.sql
@@ -0,0 +1,17 @@
+INSERT INTO abilities (`group`, model, channel_id, enabled)
+SELECT c.`group`, m.model, c.id, 1
+FROM channels c
+CROSS JOIN (
+    SELECT 'gpt-3.5-turbo' AS model UNION ALL
+    SELECT 'gpt-3.5-turbo-0301' AS model UNION ALL
+    SELECT 'gpt-4' AS model UNION ALL
+    SELECT 'gpt-4-0314' AS model
+) AS m
+WHERE c.status = 1
+  AND NOT EXISTS (
+    SELECT 1
+    FROM abilities a
+    WHERE a.`group` = c.`group`
+      AND a.model = m.model
+      AND a.channel_id = c.id
+);
diff --git a/model/ability.go b/model/ability.go
index f3dae7ace9..26ff65d285 100644
--- a/model/ability.go
+++ b/model/ability.go
@@ -13,9 +13,6 @@ type Ability struct {
 }
 
 func GetRandomSatisfiedChannel(group string, model string) (*Channel, error) {
-	if group == "default" {
-		return GetRandomChannel()
-	}
 	ability := Ability{}
 	var err error = nil
 	if common.UsingSQLite {