diff --git a/README.md b/README.md
index 94f96b0..c1673ef 100644
--- a/README.md
+++ b/README.md
@@ -132,6 +132,15 @@ config.generators do |g|
 end
 ```
 
+To override the [default factory template][], define your own template in
+`lib/templates/factory\_bot/models/factories.erb`. This template will have
+access to any methods available in `FactoryBot::Generators::ModelGenerator`.
+Note that factory\_bot\_rails will only use this custom template if you are
+generating each factory in a separate file; it will have no effect if you are
+generating all of your factories in `test/factories.rb` or `spec/factories.rb`.
+
+[default factory template]: https://github.com/thoughtbot/factory_bot_rails/tree/master/lib/generators/factory_bot/model/templates/factories.erb
+
 ## Contributing
 
 Please see [CONTRIBUTING.md](CONTRIBUTING.md).
diff --git a/features/generators.feature b/features/generators.feature
index 7dd16db..ef1506d 100644
--- a/features/generators.feature
+++ b/features/generators.feature
@@ -7,10 +7,10 @@ Feature:
     Given I successfully run `bundle exec rails new testapp`
     And I cd to "testapp"
     And I add "factory_bot_rails" from this project as a dependency
+    And I run `bundle install` with a clean environment
 
   Scenario: The factory_bot_rails generators create a factory file for each model if there is not a factories.rb file
-    When I run `bundle install` with a clean environment
-    And I run `bundle exec rails generate model User name:string age:integer` with a clean environment
+    When I run `bundle exec rails generate model User name:string age:integer` with a clean environment
     And I run `bundle exec rails generate model Namespaced::User name:string` with a clean environment
     Then the output should contain "test/factories/users.rb"
     And the output should contain "test/factories/namespaced_users.rb"
@@ -22,13 +22,11 @@ Feature:
           age { 1 }
         end
       end
-
       """
     And the file "test/factories/namespaced_users.rb" should contain "factory :namespaced_user, class: 'Namespaced::User' do"
 
   Scenario: The factory_bot_rails generators add a factory in the correct spot
-    When I run `bundle install` with a clean environment
-    And I write to "test/factories.rb" with:
+    When I write to "test/factories.rb" with:
       """
       FactoryBot.define do
       end
@@ -50,11 +48,21 @@ Feature:
       """
 
   Scenario: The factory_bot_rails generators does not create a factory file for each model if there is a factories.rb file in the test directory
-    When I run `bundle install` with a clean environment
-    And I write to "test/factories.rb" with:
+    When I write to "test/factories.rb" with:
       """
       FactoryBot.define do
       end
       """
     And I run `bundle exec rails generate model User name:string` with a clean environment
     Then the file "test/factories/users.rb" should not contain "factory :user do"
+
+  Scenario: The factory_bot_rails generators use a custom template
+    When I write to "lib/templates/factory_bot/model/factories.erb" with:
+      """
+      <%= "Custom factory definition" %>
+      """
+    And I run `bundle exec rails generate model User` with a clean environment
+    Then the file "test/factories/users.rb" should contain exactly:
+      """
+      Custom factory definition
+      """
diff --git a/lib/generators/factory_bot/model/model_generator.rb b/lib/generators/factory_bot/model/model_generator.rb
index 6f3e341..3dbedce 100644
--- a/lib/generators/factory_bot/model/model_generator.rb
+++ b/lib/generators/factory_bot/model/model_generator.rb
@@ -49,7 +49,7 @@ module FactoryBot
 
       def create_factory_file
         file = File.join(options[:dir], "#{filename}.rb")
-        create_file(file, single_file_factory_definition)
+        template "factories.erb", file
       end
 
       def factory_definition
@@ -61,14 +61,6 @@ module FactoryBot
         RUBY
       end
 
-      def single_file_factory_definition
-        <<~RUBY
-          FactoryBot.define do
-          #{factory_definition.rstrip}
-          end
-        RUBY
-      end
-
       def factory_attributes
         attributes.map do |attribute|
           "#{attribute.name} { #{attribute.default.inspect} }"
diff --git a/lib/generators/factory_bot/model/templates/factories.erb b/lib/generators/factory_bot/model/templates/factories.erb
new file mode 100644
index 0000000..340a395
--- /dev/null
+++ b/lib/generators/factory_bot/model/templates/factories.erb
@@ -0,0 +1,3 @@
+FactoryBot.define do
+<%= factory_definition.rstrip %>
+end