diff --git a/integration/apps/hanami/Gemfile b/integration/apps/hanami/Gemfile
index 5305085d12a..bfc6fcdcf05 100644
--- a/integration/apps/hanami/Gemfile
+++ b/integration/apps/hanami/Gemfile
@@ -15,15 +15,7 @@ gem 'unicorn'
 gem 'webrick'
 gem 'pry-byebug'
 
-gem_spec = Datadog::DemoEnv.gem_spec('datadog')
-req = {require: 'datadog/auto_instrument'}
-opts = if gem_spec.last.is_a?(Hash)
-  gem_spec.pop.merge(req)
-else
-  req
-end
-gem_spec << opts
-gem 'datadog', *gem_spec
+gem Datadog::DemoEnv.gem_datadog_auto_instrument
 gem 'google-protobuf', '~> 3.0'
 
 group :development do
diff --git a/integration/apps/rails-seven/Gemfile b/integration/apps/rails-seven/Gemfile
index 85b7d128063..a5cfa1b3f59 100644
--- a/integration/apps/rails-seven/Gemfile
+++ b/integration/apps/rails-seven/Gemfile
@@ -7,7 +7,7 @@ git_source(:github) { |repo| "https://github.com/#{repo}.git" }
 gem "rails", "~> 7.0.5"
 
 # Choose correct specs for 'datadog' demo environment
-gem 'datadog', *Datadog::DemoEnv.gem_spec('datadog')
+gem Datadog::DemoEnv.gem_datadog_auto_instrument
 
 gem 'dogstatsd-ruby'
 
diff --git a/integration/images/include/datadog/demo_env.rb b/integration/images/include/datadog/demo_env.rb
index 516f2a0d479..46190a078cd 100644
--- a/integration/images/include/datadog/demo_env.rb
+++ b/integration/images/include/datadog/demo_env.rb
@@ -3,7 +3,7 @@ module Datadog
   module DemoEnv
     module_function
 
-    def gem_spec(gem_name, defaults = {})
+    def gem_spec(gem_name)
       args = if local_gem(gem_name)
                [local_gem(gem_name)]
              elsif git_gem(gem_name)
@@ -17,6 +17,18 @@ def gem_spec(gem_name, defaults = {})
       args
     end
 
+    def gem_datadog_auto_instrument
+      gem_spec = gem_spec('datadog')
+      req = {require: 'datadog/auto_instrument'}
+      opts = if gem_spec.last.is_a?(Hash)
+        gem_spec.pop.merge(req)
+      else
+        req
+      end
+      gem_spec << opts
+      ['datadog', *gem_spec]
+    end
+
     def gem_env_name(gem_name)
       gem_name.upcase.tr('-', '_')
     end