diff --git a/go.mod b/go.mod
index c796e545..d1ad520b 100644
--- a/go.mod
+++ b/go.mod
@@ -12,7 +12,7 @@ require (
 	github.com/openacid/low v0.1.21
 	github.com/openacid/must v0.1.3
 	github.com/openacid/tablewriter v0.0.0-20190429071406-b14f71081b86
-	github.com/openacid/testkeys v0.1.6
+	github.com/openacid/testkeys v0.1.7
 	github.com/openacid/testutil v0.1.3
 	github.com/stretchr/testify v1.8.0
 	gopkg.in/check.v1 v1.0.0-20190902080502-41f04d3bba15 // indirect
diff --git a/go.sum b/go.sum
index 22eb411f..691b7c4b 100644
--- a/go.sum
+++ b/go.sum
@@ -28,8 +28,9 @@ github.com/openacid/must v0.1.3 h1:deanGZVyVwV+ozfwNFbRU5YF7czXeQ67s8GVyZxzKW4=
 github.com/openacid/must v0.1.3/go.mod h1:luPiXCuJlEo3UUFQngVQokV0MPGryeYvtCbQPs3U1+I=
 github.com/openacid/tablewriter v0.0.0-20190429071406-b14f71081b86 h1:VDKQXFTUgOiucWNpIruW0TQAG6oAq9p2pVQGlXkgtT0=
 github.com/openacid/tablewriter v0.0.0-20190429071406-b14f71081b86/go.mod h1:iJAvCLjVGFyZOV2Oh123q4PMcoBv2qQLEvjlVIM9E2E=
-github.com/openacid/testkeys v0.1.6 h1:vuQZu/NM6nJo0OKUcaFNtm76Rnv3fMIIXrjp0gFX7FM=
 github.com/openacid/testkeys v0.1.6/go.mod h1:MfA7cACzBpbiwekivj8StqX0WIRmqlMsci1c37CA3Do=
+github.com/openacid/testkeys v0.1.7 h1:8mai/cJLsVvBob8K9RrXilkatK4oahfCZdxDJ8CUK7I=
+github.com/openacid/testkeys v0.1.7/go.mod h1:MfA7cACzBpbiwekivj8StqX0WIRmqlMsci1c37CA3Do=
 github.com/openacid/testutil v0.1.3 h1:jSUo9ZlLho1xQO0M4paxNOHJSvpXKIm9GtwrQLRwIC0=
 github.com/openacid/testutil v0.1.3/go.mod h1:qgfN+myXuX8gc+JveuP+sts//cpvCGRM5BIqwpYnzIs=
 github.com/pkg/errors v0.9.1 h1:FEBLx1zS214owpjy7qsBeixbURkuhQAwrK5UwLGTwt4=