diff --git a/HowtoGitlab/9.md b/HowtoGitlab/9.md
index d6263ac7..c3a49c54 100644
--- a/HowtoGitlab/9.md
+++ b/HowtoGitlab/9.md
@@ -445,7 +445,7 @@ $ git commit -a -m 'change default user'
 ~~~
 $ cd ~/gitlab-shell
 $ git fetch
-$ git checkout v$(cat ~/gitlab/GITLAB_SHELL_VERSION) -b v$(cat ~/gitlab/GITLAB_SHELL_VERSION)
+$ git checkout v$(cat ~/gitlab/GITLAB_SHELL_VERSION) -b v$(cat ~/gitlab/GITLAB_SHELL_VERSION
 ~~~
 
 ### Mise à jour de gitlab-workhorse
@@ -464,7 +464,8 @@ $ cd ~/gitlab
 $ bundle install --without development test mysql aws kerberos --deployment
 $ bundle clean
 $ bundle exec rake db:migrate RAILS_ENV=production
-$ bundle exec rake assets:clean assets:precompile cache:clear RAILS_ENV=production
+$ bundle exec rake yarn:install gitlab:assets:clean gitlab:assets:compile RAILS_ENV=production NODE_ENV=production
+$ bundle exec rake cache:clear RAILS_ENV=production
 $ git commit -a -m 'upgraded to 9.x.y'
 ~~~