diff --git a/Gemfile.lock b/Gemfile.lock
index b38179853a2..a46d72f447b 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -848,7 +848,7 @@ GEM
       diff-lcs (>= 1.2.0, < 2.0)
       rspec-support (~> 3.13.0)
     rspec-support (3.13.2)
-    rubocop (1.69.2)
+    rubocop (1.70.0)
       json (~> 2.3)
       language_server-protocol (>= 3.17.0)
       parallel (~> 1.10)
@@ -862,8 +862,8 @@ GEM
       parser (>= 3.3.1.0)
     rubocop-capybara (2.21.0)
       rubocop (~> 1.41)
-    rubocop-govuk (5.0.7)
-      rubocop (= 1.69.2)
+    rubocop-govuk (5.0.8)
+      rubocop (= 1.70.0)
       rubocop-ast (= 1.37.0)
       rubocop-capybara (= 2.21.0)
       rubocop-rails (= 2.28.0)
diff --git a/app/controllers/admin/fact_check_requests_controller.rb b/app/controllers/admin/fact_check_requests_controller.rb
index 6a8a9922f10..0be7e0c5f63 100644
--- a/app/controllers/admin/fact_check_requests_controller.rb
+++ b/app/controllers/admin/fact_check_requests_controller.rb
@@ -57,7 +57,7 @@ def enforce_permissions!
   def mailer_url_options
     options = { host: request.host }
     options[:protocol] = request.protocol unless request.protocol == "http://"
-    options[:port] = request.port unless request.port == 80 || request.port == 443
+    options[:port] = request.port unless [80, 443].include?(request.port)
     options
   end