diff --git a/debian/changelog b/debian/changelog
index 4905152b..77b94d45 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -1,3 +1,11 @@
+livecd-rootfs (2.748) jammy; urgency=medium
+
+  * live-build/ubuntu-cpc/hooks.d/base/ovf/ubuntu-ova-v1-vmdk.tmpl: do not
+    automatically allocate serial0 as it causes a hang when upgrading.
+    (LP: #1895104)
+
+ -- Brian Murray <brian@ubuntu.com>  Wed, 15 Dec 2021 10:09:44 -0800
+
 livecd-rootfs (2.747) jammy; urgency=medium
 
   * ubuntu-cpc/hooks.d/base/disk-image-uefi.binary: Bump UEFI disk image
diff --git a/live-build/ubuntu-cpc/hooks.d/base/ovf/ubuntu-ova-v1-vmdk.tmpl b/live-build/ubuntu-cpc/hooks.d/base/ovf/ubuntu-ova-v1-vmdk.tmpl
index 77ecc93d..b15d73e5 100644
--- a/live-build/ubuntu-cpc/hooks.d/base/ovf/ubuntu-ova-v1-vmdk.tmpl
+++ b/live-build/ubuntu-cpc/hooks.d/base/ovf/ubuntu-ova-v1-vmdk.tmpl
@@ -85,7 +85,7 @@
         <rasd:ResourceType>6</rasd:ResourceType>
       </Item>
       <Item ovf:required="false">
-        <rasd:AutomaticAllocation>true</rasd:AutomaticAllocation>
+        <rasd:AutomaticAllocation>false</rasd:AutomaticAllocation>
         <rasd:ElementName>serial0</rasd:ElementName>
         <rasd:InstanceID>4</rasd:InstanceID>
         <rasd:ResourceSubType>vmware.serialport.device</rasd:ResourceSubType>