diff --git a/csaf_2.1/examples/provider-metadata/example-01-provider-metadata.json b/csaf_2.1/examples/provider-metadata/example-01-provider-metadata.json
index c915c0881..71a7bae85 100644
--- a/csaf_2.1/examples/provider-metadata/example-01-provider-metadata.json
+++ b/csaf_2.1/examples/provider-metadata/example-01-provider-metadata.json
@@ -6,6 +6,7 @@
       "rolie": {
         "feeds": [
           {
+            "last_updated": "2024-01-24T20:20:56.169Z",
             "summary": "All TLP:CLEAR advisories of Example Company.",
             "tlp_label": "CLEAR",
             "url": "https://www.example.com/.well-known/csaf/feed-tlp-clear.json"
diff --git a/csaf_2.1/json_schema/provider_json_schema.json b/csaf_2.1/json_schema/provider_json_schema.json
index 08af10a92..2856bd701 100644
--- a/csaf_2.1/json_schema/provider_json_schema.json
+++ b/csaf_2.1/json_schema/provider_json_schema.json
@@ -115,10 +115,17 @@
                   "description": "Contains information about the ROLIE feed.",
                   "type": "object",
                   "required": [
+                    "last_updated",
                     "tlp_label",
                     "url"
                   ],
                   "properties": {
+                    "last_updated": {
+                      "title": "Last updated",
+                      "description": "Holds the date and time when the feed was last updated.",
+                      "type": "string",
+                      "format": "date-time"
+                    },
                     "summary": {
                       "title": "Summary of the feed",
                       "description": "Contains a summary of the feed.",
diff --git a/csaf_2.1/prose/edit/src/distributing.md b/csaf_2.1/prose/edit/src/distributing.md
index 32fe3e3ce..ab2b0f21c 100644
--- a/csaf_2.1/prose/edit/src/distributing.md
+++ b/csaf_2.1/prose/edit/src/distributing.md
@@ -82,6 +82,7 @@ CSAF aggregator SHOULD display over any individual `publisher` values in the CSA
         "rolie": {
           "feeds": [
             {
+              "last_updated": "2024-01-24T20:20:56.169Z",
               "summary": "All TLP:CLEAR advisories of Example Company.",
               "tlp_label": "CLEAR",
               "url": "https://www.example.com/.well-known/csaf/feed-tlp-clear.json"