diff --git a/lib/tasks/clean.rake b/lib/tasks/clean.rake
new file mode 100644
index 0000000..d446b61
--- /dev/null
+++ b/lib/tasks/clean.rake
@@ -0,0 +1,6 @@
+desc "clean all files/directories in tmp/ directory (use carefully)"
+task :clean do
+  tmp_directory = Rails.root.join("tmp")
+  tmp_directory.rmtree
+  tmp_directory.mkdir
+end