diff --git a/app/controllers/users_controller.rb b/app/controllers/users_controller.rb
index 3e70323..da8817c 100644
--- a/app/controllers/users_controller.rb
+++ b/app/controllers/users_controller.rb
@@ -9,7 +9,7 @@ class UsersController < ApplicationController
       return render :show
     end
     session[:password] = user_params[:password]
-    redirect_to user_path
+    redirect_to user_path, notice: I18n.t("messages.password_successfully_updated")
   end
 
   private
diff --git a/app/views/users/show.html.haml b/app/views/users/show.html.haml
index bea6238..026e35d 100644
--- a/app/views/users/show.html.haml
+++ b/app/views/users/show.html.haml
@@ -3,8 +3,11 @@
 
 
 %div.col-xs-6
-  - @user.errors.full_messages.each do |e|
-    %div.alert.alert-danger= e
+  - if notice
+    %div.alert.alert-success= notice
+  - else
+    - @user.errors.full_messages.each do |e|
+      %div.alert.alert-danger= e
 
   = form_for(:user, url: user_path, method: :patch) do |f|
     %div.form-group
diff --git a/config/locales/translation_en.yml b/config/locales/translation_en.yml
index b9981f0..c13bab9 100644
--- a/config/locales/translation_en.yml
+++ b/config/locales/translation_en.yml
@@ -8,6 +8,7 @@ en:
     fluentd_stop_failed: Failed to stop fluentd
     fluentd_restart_failed: Failed to restart fluentd
     fluentd_start_stop_delay_notice: "'%{action} daemon' is accepted. That operation could take a minute for complete."
+    password_successfully_updated: "Your password has been changed successfully."
 
   terms: &terms
     name: Name
diff --git a/config/locales/translation_ja.yml b/config/locales/translation_ja.yml
index 577d147..65fdcf9 100644
--- a/config/locales/translation_ja.yml
+++ b/config/locales/translation_ja.yml
@@ -8,6 +8,7 @@ ja:
     fluentd_stop_failed:    "%{brand}の停止に失敗しました。"
     fluentd_restart_failed: "%{brand}の再起動に失敗しました。"
     fluentd_start_stop_delay_notice: "デーモンの%{action}を受け付けました。処理が完了するまで時間がかかる場合があります。"
+    password_successfully_updated: "パスワードを変更しました。"
 
   terms: &terms
     name: アカウント名