diff --git a/cloudflare-domains/managed-service-carbon-txt/carbon.txt b/cloudflare-domains/managed-service-carbon-txt/carbon.txt
index caf9977..7c6df37 100644
--- a/cloudflare-domains/managed-service-carbon-txt/carbon.txt
+++ b/cloudflare-domains/managed-service-carbon-txt/carbon.txt
@@ -1,3 +1,6 @@
+version = "0.3"
+last_updated = "2025-11-23"
+
 [upstream]
 services = []
 [org]
diff --git a/cloudflare-domains/used-in-tests-carbon-txt/carbon-txt-with-csrd-and-renewables.txt b/cloudflare-domains/used-in-tests-carbon-txt/carbon-txt-with-csrd-and-renewables.txt
index 1e57fa1..2da51e5 100644
--- a/cloudflare-domains/used-in-tests-carbon-txt/carbon-txt-with-csrd-and-renewables.txt
+++ b/cloudflare-domains/used-in-tests-carbon-txt/carbon-txt-with-csrd-and-renewables.txt
@@ -1,3 +1,6 @@
+version = "0.3"
+last_updated = "2025-11-23"
+
 [upstream]
 services = []
 
diff --git a/cloudflare-domains/used-in-tests-carbon-txt/carbon-txt-with-csrd-no-renewables-data.txt b/cloudflare-domains/used-in-tests-carbon-txt/carbon-txt-with-csrd-no-renewables-data.txt
index aca9bf6..7a3c339 100644
--- a/cloudflare-domains/used-in-tests-carbon-txt/carbon-txt-with-csrd-no-renewables-data.txt
+++ b/cloudflare-domains/used-in-tests-carbon-txt/carbon-txt-with-csrd-no-renewables-data.txt
@@ -1,3 +1,6 @@
+version = "0.3"
+last_updated = "2025-11-23"
+
 [upstream]
 services = []
 
diff --git a/cloudflare-domains/used-in-tests-carbon-txt/carbon.txt b/cloudflare-domains/used-in-tests-carbon-txt/carbon.txt
index 4f6b986..da2af92 100644
--- a/cloudflare-domains/used-in-tests-carbon-txt/carbon.txt
+++ b/cloudflare-domains/used-in-tests-carbon-txt/carbon.txt
@@ -1,3 +1,6 @@
+version = "0.3"
+last_updated = "2025-11-23"
+
 [upstream]
 services = []
 
diff --git a/cloudflare-domains/used-in-tests-carbon-txt/multiple-exceptions.carbon.txt b/cloudflare-domains/used-in-tests-carbon-txt/multiple-exceptions.carbon.txt
index b882538..ff56bfb 100644
--- a/cloudflare-domains/used-in-tests-carbon-txt/multiple-exceptions.carbon.txt
+++ b/cloudflare-domains/used-in-tests-carbon-txt/multiple-exceptions.carbon.txt
@@ -1,3 +1,6 @@
+version = "0.3"
+last_updated = "2025-11-23"
+
 [upstream]
 services =  [
   { domain = 'syseleven.com', doc_type = 'sustainability-page', url = 'https://www.syseleven.de/en/about-us/our-data-centers/' },