diff --git a/web/app/controllers/products_controller.rb b/web/app/controllers/products_controller.rb
index ea03630..47f6287 100644
--- a/web/app/controllers/products_controller.rb
+++ b/web/app/controllers/products_controller.rb
@@ -18,6 +18,6 @@ def create
 
     logger.info("Failed to create products: #{error}")
   ensure
-    render(json: {success: success, error: error}, status: status_code)
+    render(json: { success: success, error: error }, status: status_code)
   end
 end
diff --git a/web/app/services/application_service.rb b/web/app/services/application_service.rb
index 79ed695..1e34e5d 100644
--- a/web/app/services/application_service.rb
+++ b/web/app/services/application_service.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 class ApplicationService
   def self.call(*args, **kwargs, &block)
     new(*args, **kwargs, &block).call
diff --git a/web/app/services/product_creator.rb b/web/app/services/product_creator.rb
index 86bee86..cb7841e 100644
--- a/web/app/services/product_creator.rb
+++ b/web/app/services/product_creator.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 class ProductCreator < ApplicationService
   attr_reader :count
 
@@ -12,6 +14,7 @@ class ProductCreator < ApplicationService
   QUERY
 
   def initialize(count:, session: ShopifyAPI::Context.active_session)
+    super()
     @count = count
     @session = session
   end
@@ -19,14 +22,14 @@ def initialize(count:, session: ShopifyAPI::Context.active_session)
   def call
     client = ShopifyAPI::Clients::Graphql::Admin.new(session: @session)
 
-    for i in 1..count
+    (1..count).each do |_i|
       client.query(
         query: CREATE_PRODUCTS_MUTATION,
         variables: {
           input: {
             title: random_title,
             variants: [{ price: random_price }],
-          }
+          },
         }
       )
     end
diff --git a/web/test/controllers/products_controller_test.rb b/web/test/controllers/products_controller_test.rb
index 8b3d6f1..295e890 100644
--- a/web/test/controllers/products_controller_test.rb
+++ b/web/test/controllers/products_controller_test.rb
@@ -33,7 +33,7 @@ class ProductsControllerTestTest < ActionDispatch::IntegrationTest
 
   test "handles creating products" do
     token = JWT.encode(JWT_PAYLOAD, ShopifyAPI::Context.api_secret_key, "HS256")
-    stub = stub_request(:post, "https://regular-shop.myshopify.com/admin/api/2022-04/graphql.json")
+    stub_request(:post, "https://regular-shop.myshopify.com/admin/api/2022-04/graphql.json")
       .with(headers: { "X-Shopify-Access-Token" => "access-token" })
       .to_return(status: 200, body: JSON.dump({}))
 
@@ -43,15 +43,15 @@ class ProductsControllerTestTest < ActionDispatch::IntegrationTest
         headers: { "HTTP_AUTHORIZATION": "Bearer #{token}" }
 
       assert_response :success
-      assert_equal({"success" => true, "error" => nil}, JSON.parse(@response.body))
+      assert_equal({ "success" => true, "error" => nil }, JSON.parse(@response.body))
     end
   end
 
   test "handles product creation errors" do
     token = JWT.encode(JWT_PAYLOAD, ShopifyAPI::Context.api_secret_key, "HS256")
-    stub = stub_request(:post, "https://regular-shop.myshopify.com/admin/api/2022-04/graphql.json")
+    stub_request(:post, "https://regular-shop.myshopify.com/admin/api/2022-04/graphql.json")
       .with(headers: { "X-Shopify-Access-Token" => "access-token" })
-      .to_return(status: 400, body: JSON.dump({errors: "Something went wrong"}))
+      .to_return(status: 400, body: JSON.dump({ errors: "Something went wrong" }))
 
     ShopifyAPI::Utils::SessionUtils.stub(:load_current_session, SESSION) do
       get "/api/products/create",
@@ -59,7 +59,7 @@ class ProductsControllerTestTest < ActionDispatch::IntegrationTest
         headers: { "HTTP_AUTHORIZATION": "Bearer #{token}" }
 
       assert_response :bad_request
-      assert_equal({"success" => false, "error" => "Something went wrong"}, JSON.parse(@response.body))
+      assert_equal({ "success" => false, "error" => "Something went wrong" }, JSON.parse(@response.body))
     end
   end