diff --git a/Guardfile b/Guardfile
index 1e5797f..134e5dc 100644
--- a/Guardfile
+++ b/Guardfile
@@ -1,4 +1,4 @@
-guard :minitest do
+guard :minitest, spring: 'bin/rails test' do
   # with Minitest::Unit
   watch(%r{^test/(.*)_test\.rb$})
   watch(%r{^app/(.*/)?([^/]+)\.rb$}) { |m| "test/#{m[1]}#{m[2]}_test.rb" }