diff --git a/.simplecov b/.simplecov
new file mode 100644
index 0000000..9f28e5e
--- /dev/null
+++ b/.simplecov
@@ -0,0 +1,13 @@
+# frozen_string_literal: true
+
+SimpleCov.start do
+  root ENV.fetch("ENGINE_ROOT", nil)
+
+  add_filter "lib/decidim/navigation_maps/version.rb"
+  add_filter "lib/decidim/navigation_maps/test"
+  add_filter "/spec"
+end
+
+SimpleCov.command_name ENV.fetch("COMMAND_NAME", nil) || File.basename(Dir.pwd)
+
+SimpleCov.merge_timeout 1800
diff --git a/spec/spec_helper.rb b/spec/spec_helper.rb
index e74c150..c45211f 100644
--- a/spec/spec_helper.rb
+++ b/spec/spec_helper.rb
@@ -1,9 +1,8 @@
 # frozen_string_literal: true
 
 require "decidim/dev"
-
 require "simplecov"
-SimpleCov.start "rails"
+
 if ENV["CODECOV"]
   require "codecov"
   SimpleCov.formatter = SimpleCov::Formatter::Codecov