diff --git a/Guardfile b/Guardfile
new file mode 100644
index 0000000..1515a40
--- /dev/null
+++ b/Guardfile
@@ -0,0 +1,4 @@
+guard 'process', :name => 'Spec', :command => 'crystal spec'  do
+  watch(/spec\/(.*).cr$/)
+  watch(/src\/(.*).cr$/)
+end