diff --git a/lib/puppet-openstack_spec_helper/rake_tasks.rb b/lib/puppet-openstack_spec_helper/rake_tasks.rb
index 7b889a9..90c6459 100644
--- a/lib/puppet-openstack_spec_helper/rake_tasks.rb
+++ b/lib/puppet-openstack_spec_helper/rake_tasks.rb
@@ -61,6 +61,11 @@ task :spec_prep do
     else
       sh("git clone https://git.openstack.org/#{repo} #{repo}")
     end
+    # Allow to a repository to have extra modules that are not
+    # in puppet-openstack-integration
+    if File.exists?("#{Dir.pwd}/Puppetfile_extras")
+      sh("cat #{Dir.pwd}/Puppetfile_extras >> #{repo}/Puppetfile")
+    end
     script = ['env']
     script += ["PUPPETFILE_DIR=#{Dir.pwd}/spec/fixtures/modules"]
     script += ["ZUUL_REF=#{zuul_ref}"]
diff --git a/releasenotes/notes/puppetfile_extras-f49799b6edbe69a2.yaml b/releasenotes/notes/puppetfile_extras-f49799b6edbe69a2.yaml
new file mode 100644
index 0000000..edcf1d0
--- /dev/null
+++ b/releasenotes/notes/puppetfile_extras-f49799b6edbe69a2.yaml
@@ -0,0 +1,6 @@
+---
+features:
+  - If Puppetfile_extras file does exist in a Puppet module, the spec_helper will copy
+    its content to the end of Puppet OpenStack Puppetfile. It will allow external modules
+    (for example puppet-tripleo) to re-use Puppet OpenStack tooling, but adding more modules
+    in the tests.