diff --git a/Gemfile b/Gemfile
index 292f631b..e2521b0a 100644
--- a/Gemfile
+++ b/Gemfile
@@ -80,7 +80,7 @@ group :development, :test do
   gem 'rspec-its'
   gem 'rspec-rails'
   gem 'rubocop', '~> 1.56', require: false
-  gem 'rubocop-rails', '~> 2.20', require: false
+  gem 'rubocop-rails', '~> 2.21', require: false
   gem 'rubocop-rspec', require: false
   gem 'simplecov', require: false
   gem 'vcr', '~> 6.2'
diff --git a/Gemfile.lock b/Gemfile.lock
index 3e052e08..9d3bcf1e 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -284,7 +284,7 @@ GEM
       rubocop (~> 1.41)
     rubocop-factory_bot (2.23.1)
       rubocop (~> 1.33)
-    rubocop-rails (2.20.2)
+    rubocop-rails (2.21.1)
       activesupport (>= 4.2.0)
       rack (>= 1.1)
       rubocop (>= 1.33.0, < 2.0)
@@ -390,7 +390,7 @@ DEPENDENCIES
   rspec-its
   rspec-rails
   rubocop (~> 1.56)
-  rubocop-rails (~> 2.20)
+  rubocop-rails (~> 2.21)
   rubocop-rspec
   selenium-webdriver
   shakapacker (~> 7.0)
diff --git a/app/services/printer_scanner.rb b/app/services/printer_scanner.rb
index 47f6e5ee..8d7f468d 100644
--- a/app/services/printer_scanner.rb
+++ b/app/services/printer_scanner.rb
@@ -6,7 +6,7 @@ class PrinterScanner
   # rubocop:enable Layout/LineLength
 
   def call
-    uris = Printer.all.pluck(:octoprint_uri)
+    uris = Printer.pluck(:octoprint_uri)
     ips = use_cache do
       all_network_ips.select { |ip| octoprint?(ip) }
     end
diff --git a/lib/spooler.rb b/lib/spooler.rb
index 1780c6d3..62a0e333 100644
--- a/lib/spooler.rb
+++ b/lib/spooler.rb
@@ -10,7 +10,7 @@ class Spooler
 
   def initialize
     @workers = {}
-    Printer.all.each do |printer|
+    Printer.find_each do |printer|
       @workers[printer.id] = Spool.new(printer)
     end
   end