diff --git a/CHANGELOG.md b/CHANGELOG.md
index 627ee4e4e96626a9228a0bf319c9d1725f7e31b1..fd606c341a231d95c5d2f4d8c181ac0ab294b1da 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -31,7 +31,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
   h5py is now an optional dependency
 - table importer implementations for csv and tsv
 - string-in-list check for table imports
-- Documentation and test for the `extern` keyword used by the YAML interface
+- AbtractCFood has new property, `update_flags`.
 
 ### Changed ###
 
diff --git a/src/caosadvancedtools/cfood.py b/src/caosadvancedtools/cfood.py
index c818792c79440dc1fcc78f3c0b1ed1b9bd215cb8..2c56e171d8e70789bc4f0dd3881a7d8e716e75f7 100644
--- a/src/caosadvancedtools/cfood.py
+++ b/src/caosadvancedtools/cfood.py
@@ -170,6 +170,7 @@ class AbstractCFood(object, metaclass=ABCMeta):
         self.identifiables = db.Container()
         self.item = item
         self.attached_items = []
+        self.update_flags = {}
 
     @abstractmethod
     def create_identifiables(self):
diff --git a/src/caosadvancedtools/crawler.py b/src/caosadvancedtools/crawler.py
index 5a8d428655791169557f5c292d30698f6ad69798..3017f64c39147a71ed660bc5431d2aa55da7ef57 100644
--- a/src/caosadvancedtools/crawler.py
+++ b/src/caosadvancedtools/crawler.py
@@ -549,7 +549,8 @@ carefully and if the changes are ok, click on the following link:
                 logger.info(
                     "Updating {} Records...".format(
                         len(cfood.to_be_updated)))
-            guard.safe_update(cfood.to_be_updated, unique=False)
+            guard.safe_update(cfood.to_be_updated, unique=False,
+                              flags=cfood.update_flags)
         except FileNotFoundError as e:
             logger.info("Cannot access {}. However, it might be needed for"
                         " the correct execution".format(e.filename))