diff --git a/mfrc522/SimpleMFRC522.py b/mfrc522/SimpleMFRC522.py
index 91eca06..f6d1b3d 100644
--- a/mfrc522/SimpleMFRC522.py
+++ b/mfrc522/SimpleMFRC522.py
@@ -88,3 +88,7 @@ def uid_to_num(self, uid):
       for i in range(0, 5):
           n = n * 256 + uid[i]
       return n
+
+  @staticmethod
+  def cleanup():
+      GPIO.cleanup()