diff --git a/packages/core/acme-client/.github/scripts/tests-install-pebble.sh b/packages/core/acme-client/.github/scripts/tests-install-pebble.sh
index 4b830e6d..56c263ab 100644
--- a/packages/core/acme-client/.github/scripts/tests-install-pebble.sh
+++ b/packages/core/acme-client/.github/scripts/tests-install-pebble.sh
@@ -28,6 +28,6 @@ chown root:root /usr/local/bin/pebble
 chmod 0755 /usr/local/bin/pebble
 
 # Config
-sed -i 's/test\/certs\/localhost/\/etc\/pebble/' /etc/pebble/pebble.json
+sed -i 's#test/certs/localhost#/etc/pebble#' /etc/pebble/pebble.json
 
 exit 0
diff --git a/packages/core/acme-client/.github/workflows/tests.yml b/packages/core/acme-client/.github/workflows/tests.yml
index 6f9e7c4b..f22e35a9 100644
--- a/packages/core/acme-client/.github/workflows/tests.yml
+++ b/packages/core/acme-client/.github/workflows/tests.yml
@@ -9,7 +9,7 @@ jobs:
 
     strategy:
       matrix:
-        node: [16, 18, 20]
+        node: [16, 18, 20, 22]
         eab: [0, 1]
 
 
diff --git a/packages/core/acme-client/.gitignore b/packages/core/acme-client/.gitignore
index 6a3d9710..880dfa8e 100644
--- a/packages/core/acme-client/.gitignore
+++ b/packages/core/acme-client/.gitignore
@@ -1,3 +1,4 @@
+.actrc
 .vscode/
 node_modules/
 npm-debug.log
diff --git a/packages/core/acme-client/CHANGELOG.md b/packages/core/acme-client/CHANGELOG.md
index 6073144f..f6c15f9e 100644
--- a/packages/core/acme-client/CHANGELOG.md
+++ b/packages/core/acme-client/CHANGELOG.md
@@ -27,6 +27,11 @@ See [Conventional Commits](https://conventionalcommits.org) for commit guideline
 
 # Changelog
 
+## v5.3.1
+
+* `fixed` Allow `client.auto()` being called with an empty CSR common name
+* `fixed` Bug when calling `updateAccountKey()` with external account binding
+
 ## v5.3.0 (2024-02-05)
 
 * `added` Support and tests for satisfying `tls-alpn-01` challenges
diff --git a/packages/core/acme-client/src/auto.js b/packages/core/acme-client/src/auto.js
index 7df48cfd..3ca254c3 100644
--- a/packages/core/acme-client/src/auto.js
+++ b/packages/core/acme-client/src/auto.js
@@ -59,9 +59,8 @@ module.exports = async function(client, userOpts) {
      */
 
     log('[auto] Parsing domains from Certificate Signing Request');
-    const csrDomains = readCsrDomains(opts.csr);
-    const domains = [csrDomains.commonName].concat(csrDomains.altNames);
-    const uniqueDomains = Array.from(new Set(domains));
+    const { commonName, altNames } = readCsrDomains(opts.csr);
+    const uniqueDomains = Array.from(new Set([commonName].concat(altNames).filter((d) => d)));
 
     log(`[auto] Resolved ${uniqueDomains.length} unique domains from parsing the Certificate Signing Request`);
 
diff --git a/packages/core/acme-client/src/client.js b/packages/core/acme-client/src/client.js
index fea97849..ea16e7e3 100644
--- a/packages/core/acme-client/src/client.js
+++ b/packages/core/acme-client/src/client.js
@@ -261,7 +261,7 @@ class AcmeClient {
         const accountUrl = this.api.getAccountUrl();
 
         /* Create new HTTP and API clients using new key */
-        const newHttpClient = new HttpClient(this.opts.directoryUrl, newAccountKey);
+        const newHttpClient = new HttpClient(this.opts.directoryUrl, newAccountKey, this.opts.externalAccountBinding);
         const newApiClient = new AcmeApi(newHttpClient, accountUrl);
 
         /* Get old JWK */
diff --git a/packages/core/acme-client/test/70-auto.spec.js b/packages/core/acme-client/test/70-auto.spec.js
index 9d5742c9..b5fe270f 100644
--- a/packages/core/acme-client/test/70-auto.spec.js
+++ b/packages/core/acme-client/test/70-auto.spec.js
@@ -299,7 +299,6 @@ describe('client.auto', () => {
 
             it('should order san certificate', async () => {
                 const [, csr] = await acme.crypto.createCsr({
-                    commonName: testSanDomains[0],
                     altNames: testSanDomains
                 }, await createKeyFn());