diff --git a/CHANGELOG.md b/CHANGELOG.md
index 95388bab7..bb2c12197 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -29,6 +29,10 @@ runtime
 - In [#1147](https://github.com/entropyxyz/entropy-core/pull/1147) a field is added to the
   chainspec: `jump_started_signers` which allows the chain to be started in a pre-jumpstarted state
   for testing. If this is not desired it should be set to `None`.
+- In [#1209](https://github.com/entropyxyz/entropy-core/pull/1209) the `validate` and `change_threshold_accounts`
+  extrinsics no longer take a PCK certificate chain. Rather, the certificate chain is extracted from the
+  provided quote. The test CLI `change-threshold-accounts` command also no longer takes a PCK
+  certificate chain.
 
 ### Added
 - Protocol message versioning ([#1140](https://github.com/entropyxyz/entropy-core/pull/1140))
@@ -46,6 +50,7 @@ runtime
 - Update programs to accept multiple oracle data ([#1153](https://github.com/entropyxyz/entropy-core/pull/1153/))
 - Use context, not block number in TDX quote input data ([#1179](https://github.com/entropyxyz/entropy-core/pull/1179))
 - Allow offchain worker requests to all TSS nodes in entropy-tss test environment ([#1147](https://github.com/entropyxyz/entropy-core/pull/1147))
+- Extract PCK certificate chain from quotes ([#1209](https://github.com/entropyxyz/entropy-core/pull/1209))
 
 ### Fixed
 
diff --git a/crates/client/src/tests.rs b/crates/client/src/tests.rs
index c07cc5f07..bf3870102 100644
--- a/crates/client/src/tests.rs
+++ b/crates/client/src/tests.rs
@@ -119,6 +119,9 @@ async fn test_change_threshold_accounts() {
     let nonce = request_attestation(&api, &rpc, tss_signer_pair.signer()).await.unwrap();
     let nonce: [u8; 32] = nonce.try_into().unwrap();
 
+    // Our runtime is using the mock `PckCertChainVerifier`, which means that the expected
+    // "certificate" basically is just our TSS account ID. This account needs to match the one
+    // used to sign the following `quote`.
     let mut pck_seeder = StdRng::from_seed(tss_public_key.0.clone());
     let pck = tdx_quote::SigningKey::random(&mut pck_seeder);
     let encoded_pck = encode_verifying_key(&pck.verifying_key()).unwrap().to_vec();
@@ -132,6 +135,7 @@ async fn test_change_threshold_accounts() {
         );
 
         let signing_key = tdx_quote::SigningKey::random(&mut OsRng);
+
         tdx_quote::Quote::mock(signing_key.clone(), pck.clone(), input_data.0, encoded_pck.clone())
             .as_bytes()
             .to_vec()