diff --git a/Gemfile b/Gemfile
index b12886a..5fd20c7 100644
--- a/Gemfile
+++ b/Gemfile
@@ -59,8 +59,6 @@ group :development do
   gem 'capistrano-database-yml', '~> 1.0.0'
   # manage rails tasks
   gem 'capistrano-rails-collection'
-  # manage rails master.key
-  gem 'capistrano-master-key', '~> 1.0.0'
   # remote rails console and dbconsole
   gem 'capistrano-rails-console', require: false
   # manage rvm
diff --git a/Gemfile.lock b/Gemfile.lock
index 88e2066..2bebfb9 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -87,9 +87,6 @@ GEM
     capistrano-database-yml (1.0.1)
       capistrano (>= 3.1)
       sshkit (>= 1.2.0)
-    capistrano-master-key (1.0.2)
-      capistrano (~> 3.11)
-      sshkit (~> 1.17)
     capistrano-rails (1.6.1)
       capistrano (~> 3.1)
       capistrano-bundler (>= 1.1, < 3)
@@ -233,7 +230,6 @@ DEPENDENCIES
   byebug
   capistrano (~> 3.16)
   capistrano-database-yml (~> 1.0.0)
-  capistrano-master-key (~> 1.0.0)
   capistrano-rails (~> 1.6)
   capistrano-rails-collection
   capistrano-rails-console