diff --git a/Dockerfile b/Dockerfile
index 2e6452c6..73dae1b0 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -9,6 +9,9 @@ WORKDIR /app
 
 ENV PYTHONUNBUFFERED=1
 
+# Attempt to store the triggered commit
+RUN echo "docker hub: $SOURCE_COMMIT" >/source.txt
+
 RUN [ ! -d "/datastore" ] && mkdir /datastore
 
 CMD [ "python", "./backend.py" ]
diff --git a/backend/backend.py b/backend/backend.py
index b29edea7..248c58b7 100644
--- a/backend/backend.py
+++ b/backend/backend.py
@@ -268,6 +268,10 @@ def get_backup():
 
     with zipfile.ZipFile(os.path.join("/datastore", backupname), 'w', compression=zipfile.ZIP_DEFLATED,
                          compresslevel=6) as zipObj:
+
+        # Be sure we're written fresh
+        datastore.sync_to_json()
+
         # Add the index
         zipObj.write(os.path.join("/datastore", "url-watches.json"))
         # Add any snapshot data we find
diff --git a/backend/store.py b/backend/store.py
index fa399796..16ed08f2 100644
--- a/backend/store.py
+++ b/backend/store.py
@@ -1,7 +1,8 @@
 import json
 import uuid as uuid_builder
 import validators
-
+import os.path
+from os import path
 
 # Is there an existing library to ensure some data store (JSON etc) is in sync with CRUD methods?
 # Open a github issue if you know something :)
@@ -43,6 +44,11 @@ class ChangeDetectionStore:
             'history' : {} # Dict of timestamp and output stripped filename
         }
 
+        if path.isfile('/source.txt'):
+            with open('/source.txt') as f:
+                # Should be set in Dockerfile to look for /source.txt , this will give us the git commit #
+                # So when someone gives us a backup file to examine, we know exactly what code they were running.
+                self.__data['build_sha'] = f.read()
 
         try:
             with open('/datastore/url-watches.json') as json_file: