diff --git a/go.mod b/go.mod
index b6e87b4..d6f7a5e 100644
--- a/go.mod
+++ b/go.mod
@@ -1,8 +1,10 @@
 module git.zhangdeman.cn/zhangdeman/easymap
 
-go 1.20
+go 1.21
 
-require git.zhangdeman.cn/zhangdeman/util v0.0.0-20230811070456-d6a489d5860b
+toolchain go1.21.5
+
+require git.zhangdeman.cn/zhangdeman/util v0.0.0-20231014142840-445c6407db92
 
 require (
 	github.com/BurntSushi/toml v1.3.2 // indirect
diff --git a/go.sum b/go.sum
index 6f239c4..ff8ef8f 100644
--- a/go.sum
+++ b/go.sum
@@ -2,6 +2,8 @@ git.zhangdeman.cn/zhangdeman/util v0.0.0-20230810063945-842592611562 h1:wo0r4mex
 git.zhangdeman.cn/zhangdeman/util v0.0.0-20230810063945-842592611562/go.mod h1:trYFOShINaQBvinQrH4A0G2kfL22Y2lygEcAiGDt/sc=
 git.zhangdeman.cn/zhangdeman/util v0.0.0-20230811070456-d6a489d5860b h1:vnmxYrNdX6f5sEVjjkM1fIR+i32kHJ4g9DJqug9KKek=
 git.zhangdeman.cn/zhangdeman/util v0.0.0-20230811070456-d6a489d5860b/go.mod h1:Yum5+tgP+Wf1GWUAyQz1Qh8Ab9m5+90GYkYdzqVs0lA=
+git.zhangdeman.cn/zhangdeman/util v0.0.0-20231014142840-445c6407db92 h1:p1GVRYJc3NNoZeLs4CukitAbM3O/ALNq3l31cnbBQDM=
+git.zhangdeman.cn/zhangdeman/util v0.0.0-20231014142840-445c6407db92/go.mod h1:6OBeuwKy2J1TjdAwStEyC6aYC3kStmJiCg1eFC7g0fk=
 github.com/BurntSushi/toml v1.3.2 h1:o7IhLm0Msx3BaB+n3Ag7L8EVlByGnpq14C4YWiu/gL8=
 github.com/BurntSushi/toml v1.3.2/go.mod h1:CxXYINrC8qIiEnFrOxCa7Jy5BFHlXnUU2pbicEuybxQ=
 github.com/Jeffail/gabs v1.4.0 h1://5fYRRTq1edjfIrQGvdkcd22pkYUrHZ5YC/H2GJVAo=