diff --git a/spec.bs b/spec.bs
index b80e583..d8796cc 100644
--- a/spec.bs
+++ b/spec.bs
@@ -74,6 +74,19 @@ spec: url; for:/; type: dfn; text: url
     "deliveredBy": [
       "https://wicg.io/"
     ]
+  },
+  "iframe-credentialless": {
+    "authors": [
+      "Arthur Sonzogni",
+      "Camille Lamy"
+    ],
+    "href": "https://wicg.github.io/anonymous-iframe/",
+    "title": "Iframe credentialless",
+    "status": "CG-DRAFT",
+    "publisher": "WICG",
+    "deliveredBy": [
+      "https://wicg.io/"
+    ]
   }
 }
 </pre>
@@ -264,6 +277,10 @@ spec: attribution-reporting; urlPrefix: https://wicg.github.io/attribution-repor
 spec: turtledove; urlPrefix: https://wicg.github.io/turtledove/
   type: dfn
     text: construct a pending fenced frame config; url: construct-a-pending-fenced-frame-config
+spec: iframe-credentialless; urlPrefix: https://wicg.github.io/anonymous-iframe/
+  type: dfn
+    for: navigation params
+      text: credentialless; url: navigation-params-credentialless
 </pre>
 
 <style>
@@ -3990,6 +4007,55 @@ at the expense of some utility.
   </wpt>
 </div>
 
+<h3 id=credentialless-monkeypatch>Iframe credentialless</h3>
+
+The [[!IFRAME-CREDENTIALLESS]] specification defines a new object, the [=page credentialless 
+nonce=]. At a high level, the [=fenced frame config instance/partition nonce=] serves the same
+purpose as the [=page credentialless nonce=] (partitioning storage and network), but scoped to each
+fenced frame rather than to each credentialless iframe. The [=fenced frame config instance/
+partition nonce=] is also used to revoke network access in fenced frames. Perform the following
+monkeypatches to the [[!IFRAME-CREDENTIALLESS]] spec.
+
+Add the following algorithm:
+
+<div algorithm>
+  To <dfn for="browsing context">compute the effective partition nonce</dfn> given a boolean 
+  |credentialless| and [=fenced frame config instance/partition nonce=]-or-null
+  |newFencedFrameNonce|:
+
+  1. If |credentialless| is true, return the associated [=browsing context=]'s [=top-level
+     browsing context=]'s [=page credentialless nonce=].
+
+  1. If |newFencedFrameNonce| is not null, return |newFencedFrameNonce|.
+
+  1. Let |instance| be the associated [=browsing context=]'s [=browsing context/fenced frame
+     config instance=].
+
+  1. Return |instance|'s [=fenced frame config instance/partition nonce=] if |instance| is not
+     null, and return null otherwise.
+</div>
+
+<div algorithm="process a navigate fetch">
+  Modify the step added to <a href=https://wicg.github.io/anonymous-iframe/#spec-navigation-partition-nonce>
+  process a navigate fetch</a> to read:
+
+  13. Let <var ignore>partitionNonce</var> be the result of [=browsing context/computing the
+      effective partition nonce=] on <var ignore>browsingContext</var> given <var ignore>
+      credentialless</var> and <var ignore>sourceSnapshotParams</var>'s [=source snapshot params/
+      target fenced frame config=].
+</div>
+
+<div algorithm="initialize the document object">
+  Modify the step added to <a href=https://wicg.github.io/anonymous-iframe/#spec-window-partition-nonce>
+  initialize the document object</a> to read:
+
+  6.9. Let <var ignore>partitionNonce</var> be the result of [=browsing context/computing the
+       effective partition nonce=] on <var ignore>browsingContext</var> given |navigationParams|'s
+       [=navigation params/credentialless=] and null if |navigationParams|'s [=navigation params/
+       fenced frame config instance=] is null else |navigationParams|'s [=navigation params/fenced
+       frame config instance=]'s [=fenced frame config instance/partition nonce=].
+</div>
+
 <h3 id=webrtc-monkeypatch>WebRTC</h3>
 
 The [[WEBRTC]] specification defines "ECMAScript APIs in WebIDL to allow media and generic