diff --git a/config/deploy.rb b/config/deploy.rb
index 6009af2..b3cef9a 100644
--- a/config/deploy.rb
+++ b/config/deploy.rb
@@ -3,11 +3,6 @@
 set :branch, 'ro'
 set :deploy_to, '/var/rubydoc/rurema-search'
 
-set :default_env, {
-  'PATH' => '/snap/bin:$PATH',
-  'DEBIAN_DISABLE_RUBYGEMS_INTEGRATION' => 'true',
-}
-
 set :linked_files, %w{document.yaml production.yaml}
 set :linked_dirs, %w{groonga-database var/lib/suggest}