diff --git a/doorUpdater.py b/doorUpdater.py
index 8ce22df..213a030 100755
--- a/doorUpdater.py
+++ b/doorUpdater.py
@@ -4,6 +4,8 @@ import requests
 import csv
 from io import StringIO
 import urllib3
+from hashlib import md5
+import os
 
 from passwords import *
 
@@ -69,6 +71,15 @@ def getMembershipworksData():
         print(r.text)
         sys.exit(1)
 
+    newHash = md5(bytes(r.text, 'utf8')).hexdigest()
+    if os.path.exists('/tmp/doorUpdaterLastHash'):
+        with open('/tmp/doorUpdaterLastHash', 'r') as f:
+            if newHash == f.read():
+                print("hashes are the same, not updating")
+                sys.exit(0)
+    with open('/tmp/doorUpdaterLastHash', 'w') as f:
+        f.write(newHash)
+
     return r.text
 
 def makeMember(member, doorAuth):