diff --git a/app/models/site.rb b/app/models/site.rb
index 8f393f3a..cb351fcc 100644
--- a/app/models/site.rb
+++ b/app/models/site.rb
@@ -574,14 +574,18 @@ class Site < ApplicationRecord
   def install_gems
     return unless persisted?
 
-    deploy_local = deploys.find_by_type('DeployLocal')
-    deploy_local.git_lfs
+    Site.one_at_a_time.synchronize do
+      deploy_local = deploys.find_by_type('DeployLocal')
+      deploy_local.git_lfs
+    end
 
     return unless !gems_installed? || gemfile_updated? || gemfile_lock_updated?
 
-    deploy_local.bundle
-    touch
-    FileUtils.touch(gemfile_path)
+    Site.one_at_a_time.synchronize do
+      deploy_local.bundle
+      touch
+      FileUtils.touch(gemfile_path)
+    end
   end
 
   def gem_path