diff --git a/README.md b/README.md
index a4f041c..1c54e61 100644
--- a/README.md
+++ b/README.md
@@ -47,7 +47,7 @@ curl -Lo ~/.config/fish/functions/fisher.fish --create-dirs git.io/fisherman
 With npm.
 
 ```
-npm i fisherman
+npm i -g fisherman
 ```
 
 ## Usage
diff --git a/docs/es-ES/README.md b/docs/es-ES/README.md
index 0086f72..edf0c3b 100644
--- a/docs/es-ES/README.md
+++ b/docs/es-ES/README.md
@@ -46,7 +46,7 @@ curl -Lo ~/.config/fish/functions/fisher.fish --create-dirs git.io/fisherman
 Via npm.
 
 ```
-npm i fisherman
+npm i -g fisherman
 ```
 
 ## Uso
diff --git a/docs/jp-JA/README.md b/docs/jp-JA/README.md
index 629d78a..303c545 100644
--- a/docs/jp-JA/README.md
+++ b/docs/jp-JA/README.md
@@ -46,7 +46,7 @@ curl -Lo ~/.config/fish/functions/fisher.fish --create-dirs git.io/fisherman
 npmで。
 
 ```
-npm i fisherman
+npm i -g fisherman
 ```
 
 ## 使い方
diff --git a/docs/ru-RU/README.md b/docs/ru-RU/README.md
index 8cae403..57669f5 100644
--- a/docs/ru-RU/README.md
+++ b/docs/ru-RU/README.md
@@ -48,7 +48,7 @@ curl -Lo ~/.config/fish/functions/fisher.fish --create-dirs git.io/fisherman
 npm.
 
 ```sh
-npm i fisherman
+npm i -g fisherman
 ```
 
 ## Использование
diff --git a/docs/zh-CN/README.md b/docs/zh-CN/README.md
index 2ac046c..d71bdee 100644
--- a/docs/zh-CN/README.md
+++ b/docs/zh-CN/README.md
@@ -46,7 +46,7 @@ curl -Lo ~/.config/fish/functions/fisher.fish --create-dirs git.io/fisherman
 npm。
 
 ```
-npm i fisherman
+npm i -g fisherman
 ```
 
 ## 功能