diff --git a/build_library/disk_util b/build_library/disk_util
index f94317e3c1..8550605a99 100755
--- a/build_library/disk_util
+++ b/build_library/disk_util
@@ -799,7 +799,7 @@ def Verity(options):
                   '--hash-offset', part['fs_bytes'],
                   loop_dev, loop_dev]).decode('utf8')
       print(verityout.strip())
-      m = re.search("Root hash:\s+([a-f0-9]{64})$", verityout, re.IGNORECASE|re.MULTILINE)
+      m = re.search(r'Root hash:\s+([a-f0-9]{64})$', verityout, re.IGNORECASE|re.MULTILINE)
       if not m:
           raise Exception("Failed to parse verity output!")
 
diff --git a/build_library/vm_image_util.sh b/build_library/vm_image_util.sh
index 873e2beff5..17a0c024a2 100644
--- a/build_library/vm_image_util.sh
+++ b/build_library/vm_image_util.sh
@@ -299,12 +299,15 @@ IMG_hetzner_OEM_SYSEXT=oem-hetzner
 
 ## hyper-v
 IMG_hyperv_DISK_FORMAT=vhd
-IMG_hyperv_OEM_PACKAGE=oem-hyperv
+IMG_hyperv_OEM_USE=hyperv
+IMG_hyperv_OEM_PACKAGE=common-oem-files
+IMG_hyperv_OEM_SYSEXT=oem-hyperv
 
 ## hyper-v vhdx
 IMG_hyperv_vhdx_DISK_FORMAT=vhdx
-IMG_hyperv_vhdx_OEM_PACKAGE=oem-hyperv
-
+IMG_hyperv_vhdx_OEM_USE=hyperv
+IMG_hyperv_vhdx_OEM_PACKAGE=common-oem-files
+IMG_hyperv_vhdx_OEM_SYSEXT=oem-hyperv
 
 ## cloudsigma
 IMG_cloudsigma_DISK_FORMAT=qcow2
diff --git a/changelog/changes/2025-08-29-hyperv-sysext.md b/changelog/changes/2025-08-29-hyperv-sysext.md
new file mode 100644
index 0000000000..066d933a37
--- /dev/null
+++ b/changelog/changes/2025-08-29-hyperv-sysext.md
@@ -0,0 +1 @@
+- Hyper-V images now use a systemd-sysext image for layering additional platform-specific software on top of `/usr`
diff --git a/sdk_container/src/third_party/coreos-overlay/coreos-base/common-oem-files/common-oem-files-0-r10.ebuild b/sdk_container/src/third_party/coreos-overlay/coreos-base/common-oem-files/common-oem-files-0-r11.ebuild
similarity index 99%
rename from sdk_container/src/third_party/coreos-overlay/coreos-base/common-oem-files/common-oem-files-0-r10.ebuild
rename to sdk_container/src/third_party/coreos-overlay/coreos-base/common-oem-files/common-oem-files-0-r11.ebuild
index dbf575dbf3..d77890980e 100644
--- a/sdk_container/src/third_party/coreos-overlay/coreos-base/common-oem-files/common-oem-files-0-r10.ebuild
+++ b/sdk_container/src/third_party/coreos-overlay/coreos-base/common-oem-files/common-oem-files-0-r11.ebuild
@@ -48,6 +48,7 @@ ARM64_ONLY_OEMIDS=(
 AMD64_ONLY_OEMIDS=(
     digitalocean
     gce
+    hyperv
     vmware
 )
 
diff --git a/sdk_container/src/third_party/coreos-overlay/coreos-base/oem-hyperv/oem-hyperv-0.1.0-r1.ebuild b/sdk_container/src/third_party/coreos-overlay/coreos-base/oem-hyperv/oem-hyperv-0.2.0.ebuild
similarity index 58%
rename from sdk_container/src/third_party/coreos-overlay/coreos-base/oem-hyperv/oem-hyperv-0.1.0-r1.ebuild
rename to sdk_container/src/third_party/coreos-overlay/coreos-base/oem-hyperv/oem-hyperv-0.2.0.ebuild
index 079bcd7984..99dd94e836 100644
--- a/sdk_container/src/third_party/coreos-overlay/coreos-base/oem-hyperv/oem-hyperv-0.1.0-r1.ebuild
+++ b/sdk_container/src/third_party/coreos-overlay/coreos-base/oem-hyperv/oem-hyperv-0.2.0.ebuild
@@ -1,7 +1,7 @@
 # Copyright (c) 2013 CoreOS, Inc.. All rights reserved.
 # Distributed under the terms of the GNU General Public License v2
 
-EAPI=7
+EAPI=8
 
 DESCRIPTION="OEM suite for Hyper-V"
 HOMEPAGE=""
@@ -12,21 +12,11 @@ SLOT="0"
 KEYWORDS="amd64"
 IUSE=""
 
-# no source directory
-S="${WORKDIR}"
-
 RDEPEND="
   app-emulation/hv-daemons
 "
 
-src_prepare() {
-	default
-	sed -e "s\\@@OEM_VERSION_ID@@\\${PVR}\\g" \
-		"${FILESDIR}/oem-release" > "${T}/oem-release" || die
-}
+OEM_NAME="Microsoft Hyper-V"
 
-src_install() {
-	insinto "/oem"
-	doins "${FILESDIR}/grub.cfg"
-	doins "${T}/oem-release"
-}
+# no source directory
+S="${WORKDIR}"