diff --git a/Gomfile b/Gomfile
index cd242e3..eb71485 100644
--- a/Gomfile
+++ b/Gomfile
@@ -1,4 +1,5 @@
 gom 'github.com/spf13/cobra'
+gom 'github.com/mattn/go-isatty'
 gom 'github.com/tcnksm/go-latest'
 
 group :development do
diff --git a/Makefile b/Makefile
index 3721f5d..e962d2a 100644
--- a/Makefile
+++ b/Makefile
@@ -1,4 +1,4 @@
-VERSION     := 0.2.0
+VERSION     := 0.2.1
 GO_BUILDOPT := -ldflags '-s -w -X main.version $(VERSION)'
 
 gom:
diff --git a/README.md b/README.md
index 660a6d9..9640769 100644
--- a/README.md
+++ b/README.md
@@ -1,4 +1,4 @@
-## ohgi v0.2.0
+## ohgi v0.2.1
 
 ![image.png](https://raw.githubusercontent.com/hico-horiuchi/ohgi/master/image.png)