diff --git a/.rubocop.yml b/.rubocop.yml
index 1ab77533c..6010a7d4c 100644
--- a/.rubocop.yml
+++ b/.rubocop.yml
@@ -1,6 +1,7 @@
 require:
   - rubocop/rspec/focused
   - ./lib/cops/unscoped.rb
+  - ./lib/cops/application_name.rb
 inherit_gem:
   rubocop-rails_config:
     - config/rails.yml
@@ -12,6 +13,17 @@ AllCops:
     - "bin/*"
     - "node_modules/**/*"
 
+DS/Unscoped:
+  Enabled: true
+
+DS/ApplicationName:
+  Enabled: true
+  Exclude:
+    - './config/application_name.rb'
+    - './lib/cops/application_name.rb'
+    - './lib/linters/application_name_linter.rb'
+    - "./spec/**/*"
+
 Bundler/DuplicatedGem:
   Enabled: true
 
diff --git a/lib/cops/application_name.rb b/lib/cops/application_name.rb
new file mode 100644
index 000000000..402a041ec
--- /dev/null
+++ b/lib/cops/application_name.rb
@@ -0,0 +1,17 @@
+if defined?(RuboCop)
+  module RuboCop
+    module Cop
+      module DS
+        class ApplicationName < Cop
+          MSG = "Avoid hardcoding `demarches-simplifiees.fr`. Instead use a dedicated environnement variable."
+
+          def on_str(node)
+            return unless node.source.include?('demarches-simplifiees.fr')
+
+            add_offense(node)
+          end
+        end
+      end
+    end
+  end
+end