diff --git a/peribolos/knative-extensions-OWNERS_ALIASES b/peribolos/knative-extensions-OWNERS_ALIASES
index de784979..421dbe44 100644
--- a/peribolos/knative-extensions-OWNERS_ALIASES
+++ b/peribolos/knative-extensions-OWNERS_ALIASES
@@ -187,7 +187,6 @@ aliases:
   - knative-prow-robot
   - knative-prow-updater-robot
   - knative-test-reporter-robot
-  net-certmanager-approvers: []
   net-contour-approvers:
   - KauzClay
   - dprotaso
diff --git a/peribolos/knative-extensions.yaml b/peribolos/knative-extensions.yaml
index 9c92d6f9..98a92cab 100644
--- a/peribolos/knative-extensions.yaml
+++ b/peribolos/knative-extensions.yaml
@@ -461,6 +461,7 @@ orgs:
         has_wiki: false
         squash_merge_commit_title: PR_TITLE
         squash_merge_commit_message: COMMIT_MESSAGES
+        archived: true
       net-contour:
         allow_merge_commit: false
         allow_rebase_merge: false
@@ -691,7 +692,6 @@ orgs:
           kn-plugin-source-kamelet: admin
           knobots: admin
           kperf: admin
-          net-certmanager: admin
           net-contour: admin
           net-http01: admin
           net-istio: admin
@@ -808,7 +808,6 @@ orgs:
         - retocode
         - skonto
         repos:
-          net-certmanager: triage
           net-contour: triage
           net-gateway-api: triage
           net-http01: triage
@@ -821,7 +820,6 @@ orgs:
         description: Grants write access to serving-related repositories.
         privacy: closed
         repos:
-          net-certmanager: write
           net-contour: write
           net-gateway-api: write
           net-http01: write
@@ -1148,13 +1146,6 @@ orgs:
         - KauzClay
         - dprotaso
 
-      net-certmanager Approvers:
-        description: Approver group for net-certmanager - to be used in CODEOWNERS file
-        privacy: closed
-        repos:
-          net-certmanager: write
-        members: []
-
       net-http01 Approvers:
         description: Approver group for net-http01 - to be used in CODEOWNERS file
         privacy: closed