diff --git a/ckanext/harvest_basket/harvesters/ods_harvester.py b/ckanext/harvest_basket/harvesters/ods_harvester.py
index ce4226c..5f03245 100644
--- a/ckanext/harvest_basket/harvesters/ods_harvester.py
+++ b/ckanext/harvest_basket/harvesters/ods_harvester.py
@@ -151,6 +151,9 @@ def _fetch_resources(self, source_url, resource_urls, pkg_data):
                 "name"
             ] = f"{pkg_data.get('title', tk._('Unnamed resource'))} ({res['rel']})"
 
+            # Try to create unique ID that won't be changed over time
+            resource['id'] = self._generate_unique_id(pkg_data['id'] + resource["format"], resource["url"])
+
             resources.append(resource)
 
         # attachments are an additional resources that we can fetch
@@ -168,6 +171,9 @@ def _fetch_resources(self, source_url, resource_urls, pkg_data):
                 resource["format"] = self._guess_attachment_format(att)
                 resource["name"] = att.get("title", "")
 
+                # Try to create unique ID that won't be changed over time
+                resource['id'] = self._generate_unique_id(pkg_data['id'] + resource["format"], resource["url"])
+
                 resources.append(resource)
         return resources