diff --git a/src/qemu/qemu_capabilities.c b/src/qemu/qemu_capabilities.c
index ce00edcb1c..109a7ed9de 100644
--- a/src/qemu/qemu_capabilities.c
+++ b/src/qemu/qemu_capabilities.c
@@ -611,6 +611,9 @@ VIR_ENUM_IMPL(virQEMUCaps,
               "am53c974",
               "virtio-pmem-pci",
               "vhost-user-fs.bootindex",
+
+              /* 390 */
+              "vhost-user-blk",
     );
 
 
@@ -1331,6 +1334,7 @@ struct virQEMUCapsStringFlags virQEMUCapsObjectTypes[] = {
     { "dc390", QEMU_CAPS_SCSI_DC390 },
     { "am53c974", QEMU_CAPS_SCSI_AM53C974 },
     { "virtio-pmem-pci", QEMU_CAPS_DEVICE_VIRTIO_PMEM_PCI },
+    { "vhost-user-blk", QEMU_CAPS_DEVICE_VHOST_USER_BLK },
 };
 
 
diff --git a/src/qemu/qemu_capabilities.h b/src/qemu/qemu_capabilities.h
index 3e26365f12..8cb5673042 100644
--- a/src/qemu/qemu_capabilities.h
+++ b/src/qemu/qemu_capabilities.h
@@ -592,6 +592,9 @@ typedef enum { /* virQEMUCapsFlags grouping marker for syntax-check */
     QEMU_CAPS_DEVICE_VIRTIO_PMEM_PCI, /* -device virtio-pmem-pci */
     QEMU_CAPS_VHOST_USER_FS_BOOTINDEX, /* vhost-user-fs.bootindex */
 
+    /* 390 */
+    QEMU_CAPS_DEVICE_VHOST_USER_BLK, /* -device vhost-user-blk */
+
     QEMU_CAPS_LAST /* this must always be the last item */
 } virQEMUCapsFlags;
 
diff --git a/tests/qemucapabilitiesdata/caps_2.12.0.aarch64.xml b/tests/qemucapabilitiesdata/caps_2.12.0.aarch64.xml
index a4574f70f6..3ff1bf3ff8 100644
--- a/tests/qemucapabilitiesdata/caps_2.12.0.aarch64.xml
+++ b/tests/qemucapabilitiesdata/caps_2.12.0.aarch64.xml
@@ -166,6 +166,7 @@
   <flag name='fsdev.createmode'/>
   <flag name='dc390'/>
   <flag name='am53c974'/>
+  <flag name='vhost-user-blk'/>
   <version>2012000</version>
   <kvmVersion>0</kvmVersion>
   <microcodeVersion>61700289</microcodeVersion>
diff --git a/tests/qemucapabilitiesdata/caps_2.12.0.ppc64.xml b/tests/qemucapabilitiesdata/caps_2.12.0.ppc64.xml
index ab5ab06084..9311bf66db 100644
--- a/tests/qemucapabilitiesdata/caps_2.12.0.ppc64.xml
+++ b/tests/qemucapabilitiesdata/caps_2.12.0.ppc64.xml
@@ -167,6 +167,7 @@
   <flag name='fsdev.createmode'/>
   <flag name='dc390'/>
   <flag name='am53c974'/>
+  <flag name='vhost-user-blk'/>
   <version>2011090</version>
   <kvmVersion>0</kvmVersion>
   <microcodeVersion>42900289</microcodeVersion>
diff --git a/tests/qemucapabilitiesdata/caps_2.12.0.s390x.xml b/tests/qemucapabilitiesdata/caps_2.12.0.s390x.xml
index 588ccc58e4..63c7e38f40 100644
--- a/tests/qemucapabilitiesdata/caps_2.12.0.s390x.xml
+++ b/tests/qemucapabilitiesdata/caps_2.12.0.s390x.xml
@@ -133,6 +133,7 @@
   <flag name='migration-param.downtime'/>
   <flag name='migration-param.xbzrle-cache-size'/>
   <flag name='fsdev.createmode'/>
+  <flag name='vhost-user-blk'/>
   <version>2012000</version>
   <kvmVersion>0</kvmVersion>
   <microcodeVersion>39100289</microcodeVersion>
diff --git a/tests/qemucapabilitiesdata/caps_2.12.0.x86_64.xml b/tests/qemucapabilitiesdata/caps_2.12.0.x86_64.xml
index 13b61fcfe5..df0ce08da6 100644
--- a/tests/qemucapabilitiesdata/caps_2.12.0.x86_64.xml
+++ b/tests/qemucapabilitiesdata/caps_2.12.0.x86_64.xml
@@ -210,6 +210,7 @@
   <flag name='fsdev.createmode'/>
   <flag name='dc390'/>
   <flag name='am53c974'/>
+  <flag name='vhost-user-blk'/>
   <version>2011090</version>
   <kvmVersion>0</kvmVersion>
   <microcodeVersion>43100289</microcodeVersion>
diff --git a/tests/qemucapabilitiesdata/caps_3.0.0.ppc64.xml b/tests/qemucapabilitiesdata/caps_3.0.0.ppc64.xml
index c92bb5f6a3..dc0e8d637e 100644
--- a/tests/qemucapabilitiesdata/caps_3.0.0.ppc64.xml
+++ b/tests/qemucapabilitiesdata/caps_3.0.0.ppc64.xml
@@ -169,6 +169,7 @@
   <flag name='fsdev.createmode'/>
   <flag name='dc390'/>
   <flag name='am53c974'/>
+  <flag name='vhost-user-blk'/>
   <version>2012050</version>
   <kvmVersion>0</kvmVersion>
   <microcodeVersion>42900239</microcodeVersion>
diff --git a/tests/qemucapabilitiesdata/caps_3.0.0.riscv32.xml b/tests/qemucapabilitiesdata/caps_3.0.0.riscv32.xml
index d68c785583..cbc185fc3a 100644
--- a/tests/qemucapabilitiesdata/caps_3.0.0.riscv32.xml
+++ b/tests/qemucapabilitiesdata/caps_3.0.0.riscv32.xml
@@ -103,6 +103,7 @@
   <flag name='migration-param.downtime'/>
   <flag name='migration-param.xbzrle-cache-size'/>
   <flag name='fsdev.createmode'/>
+  <flag name='vhost-user-blk'/>
   <version>3000000</version>
   <kvmVersion>0</kvmVersion>
   <microcodeVersion>0</microcodeVersion>
diff --git a/tests/qemucapabilitiesdata/caps_3.0.0.riscv64.xml b/tests/qemucapabilitiesdata/caps_3.0.0.riscv64.xml
index 3dd3ec87e5..aa803ccbd6 100644
--- a/tests/qemucapabilitiesdata/caps_3.0.0.riscv64.xml
+++ b/tests/qemucapabilitiesdata/caps_3.0.0.riscv64.xml
@@ -103,6 +103,7 @@
   <flag name='migration-param.downtime'/>
   <flag name='migration-param.xbzrle-cache-size'/>
   <flag name='fsdev.createmode'/>
+  <flag name='vhost-user-blk'/>
   <version>3000000</version>
   <kvmVersion>0</kvmVersion>
   <microcodeVersion>0</microcodeVersion>
diff --git a/tests/qemucapabilitiesdata/caps_3.0.0.s390x.xml b/tests/qemucapabilitiesdata/caps_3.0.0.s390x.xml
index 649104ccbd..cdb767bbf7 100644
--- a/tests/qemucapabilitiesdata/caps_3.0.0.s390x.xml
+++ b/tests/qemucapabilitiesdata/caps_3.0.0.s390x.xml
@@ -136,6 +136,7 @@
   <flag name='migration-param.downtime'/>
   <flag name='migration-param.xbzrle-cache-size'/>
   <flag name='fsdev.createmode'/>
+  <flag name='vhost-user-blk'/>
   <version>3000000</version>
   <kvmVersion>0</kvmVersion>
   <microcodeVersion>39100239</microcodeVersion>
diff --git a/tests/qemucapabilitiesdata/caps_3.0.0.x86_64.xml b/tests/qemucapabilitiesdata/caps_3.0.0.x86_64.xml
index d7f1d6cd84..2ea912eaad 100644
--- a/tests/qemucapabilitiesdata/caps_3.0.0.x86_64.xml
+++ b/tests/qemucapabilitiesdata/caps_3.0.0.x86_64.xml
@@ -216,6 +216,7 @@
   <flag name='fsdev.createmode'/>
   <flag name='dc390'/>
   <flag name='am53c974'/>
+  <flag name='vhost-user-blk'/>
   <version>3000000</version>
   <kvmVersion>0</kvmVersion>
   <microcodeVersion>43100239</microcodeVersion>
diff --git a/tests/qemucapabilitiesdata/caps_3.1.0.ppc64.xml b/tests/qemucapabilitiesdata/caps_3.1.0.ppc64.xml
index f4b4566ea8..b05f16983c 100644
--- a/tests/qemucapabilitiesdata/caps_3.1.0.ppc64.xml
+++ b/tests/qemucapabilitiesdata/caps_3.1.0.ppc64.xml
@@ -174,6 +174,7 @@
   <flag name='fsdev.createmode'/>
   <flag name='dc390'/>
   <flag name='am53c974'/>
+  <flag name='vhost-user-blk'/>
   <version>3000091</version>
   <kvmVersion>0</kvmVersion>
   <microcodeVersion>42900240</microcodeVersion>
diff --git a/tests/qemucapabilitiesdata/caps_3.1.0.x86_64.xml b/tests/qemucapabilitiesdata/caps_3.1.0.x86_64.xml
index b8391f1353..8a892a5da3 100644
--- a/tests/qemucapabilitiesdata/caps_3.1.0.x86_64.xml
+++ b/tests/qemucapabilitiesdata/caps_3.1.0.x86_64.xml
@@ -219,6 +219,7 @@
   <flag name='fsdev.createmode'/>
   <flag name='dc390'/>
   <flag name='am53c974'/>
+  <flag name='vhost-user-blk'/>
   <version>3000092</version>
   <kvmVersion>0</kvmVersion>
   <microcodeVersion>43100240</microcodeVersion>
diff --git a/tests/qemucapabilitiesdata/caps_4.0.0.aarch64.xml b/tests/qemucapabilitiesdata/caps_4.0.0.aarch64.xml
index 4722557eaf..c28ada94fb 100644
--- a/tests/qemucapabilitiesdata/caps_4.0.0.aarch64.xml
+++ b/tests/qemucapabilitiesdata/caps_4.0.0.aarch64.xml
@@ -180,6 +180,7 @@
   <flag name='fsdev.createmode'/>
   <flag name='dc390'/>
   <flag name='am53c974'/>
+  <flag name='vhost-user-blk'/>
   <version>4000000</version>
   <kvmVersion>0</kvmVersion>
   <microcodeVersion>61700240</microcodeVersion>
diff --git a/tests/qemucapabilitiesdata/caps_4.0.0.ppc64.xml b/tests/qemucapabilitiesdata/caps_4.0.0.ppc64.xml
index 6f549902ca..a15edd87de 100644
--- a/tests/qemucapabilitiesdata/caps_4.0.0.ppc64.xml
+++ b/tests/qemucapabilitiesdata/caps_4.0.0.ppc64.xml
@@ -188,6 +188,7 @@
   <flag name='fsdev.createmode'/>
   <flag name='dc390'/>
   <flag name='am53c974'/>
+  <flag name='vhost-user-blk'/>
   <version>4000000</version>
   <kvmVersion>0</kvmVersion>
   <microcodeVersion>42900240</microcodeVersion>
diff --git a/tests/qemucapabilitiesdata/caps_4.0.0.riscv32.xml b/tests/qemucapabilitiesdata/caps_4.0.0.riscv32.xml
index b1dc08eb4d..de2b578b82 100644
--- a/tests/qemucapabilitiesdata/caps_4.0.0.riscv32.xml
+++ b/tests/qemucapabilitiesdata/caps_4.0.0.riscv32.xml
@@ -181,6 +181,7 @@
   <flag name='fsdev.createmode'/>
   <flag name='dc390'/>
   <flag name='am53c974'/>
+  <flag name='vhost-user-blk'/>
   <version>4000000</version>
   <kvmVersion>0</kvmVersion>
   <microcodeVersion>0</microcodeVersion>
diff --git a/tests/qemucapabilitiesdata/caps_4.0.0.riscv64.xml b/tests/qemucapabilitiesdata/caps_4.0.0.riscv64.xml
index babb8fb8ab..754ad6db53 100644
--- a/tests/qemucapabilitiesdata/caps_4.0.0.riscv64.xml
+++ b/tests/qemucapabilitiesdata/caps_4.0.0.riscv64.xml
@@ -181,6 +181,7 @@
   <flag name='fsdev.createmode'/>
   <flag name='dc390'/>
   <flag name='am53c974'/>
+  <flag name='vhost-user-blk'/>
   <version>4000000</version>
   <kvmVersion>0</kvmVersion>
   <microcodeVersion>0</microcodeVersion>
diff --git a/tests/qemucapabilitiesdata/caps_4.0.0.s390x.xml b/tests/qemucapabilitiesdata/caps_4.0.0.s390x.xml
index 5a15848f88..4a10deea01 100644
--- a/tests/qemucapabilitiesdata/caps_4.0.0.s390x.xml
+++ b/tests/qemucapabilitiesdata/caps_4.0.0.s390x.xml
@@ -144,6 +144,7 @@
   <flag name='migration-param.downtime'/>
   <flag name='migration-param.xbzrle-cache-size'/>
   <flag name='fsdev.createmode'/>
+  <flag name='vhost-user-blk'/>
   <version>4000000</version>
   <kvmVersion>0</kvmVersion>
   <microcodeVersion>39100240</microcodeVersion>
diff --git a/tests/qemucapabilitiesdata/caps_4.0.0.x86_64.xml b/tests/qemucapabilitiesdata/caps_4.0.0.x86_64.xml
index 43b70ccc94..c580d29374 100644
--- a/tests/qemucapabilitiesdata/caps_4.0.0.x86_64.xml
+++ b/tests/qemucapabilitiesdata/caps_4.0.0.x86_64.xml
@@ -225,6 +225,7 @@
   <flag name='fsdev.createmode'/>
   <flag name='dc390'/>
   <flag name='am53c974'/>
+  <flag name='vhost-user-blk'/>
   <version>4000000</version>
   <kvmVersion>0</kvmVersion>
   <microcodeVersion>43100240</microcodeVersion>
diff --git a/tests/qemucapabilitiesdata/caps_4.1.0.x86_64.xml b/tests/qemucapabilitiesdata/caps_4.1.0.x86_64.xml
index b4f2092e7a..26eb3786e8 100644
--- a/tests/qemucapabilitiesdata/caps_4.1.0.x86_64.xml
+++ b/tests/qemucapabilitiesdata/caps_4.1.0.x86_64.xml
@@ -232,6 +232,7 @@
   <flag name='dc390'/>
   <flag name='am53c974'/>
   <flag name='virtio-pmem-pci'/>
+  <flag name='vhost-user-blk'/>
   <version>4001000</version>
   <kvmVersion>0</kvmVersion>
   <microcodeVersion>43100241</microcodeVersion>
diff --git a/tests/qemucapabilitiesdata/caps_4.2.0.aarch64.xml b/tests/qemucapabilitiesdata/caps_4.2.0.aarch64.xml
index 77fdc73415..4c149e79bb 100644
--- a/tests/qemucapabilitiesdata/caps_4.2.0.aarch64.xml
+++ b/tests/qemucapabilitiesdata/caps_4.2.0.aarch64.xml
@@ -193,6 +193,7 @@
   <flag name='fsdev.createmode'/>
   <flag name='dc390'/>
   <flag name='am53c974'/>
+  <flag name='vhost-user-blk'/>
   <version>4001050</version>
   <kvmVersion>0</kvmVersion>
   <microcodeVersion>61700242</microcodeVersion>
diff --git a/tests/qemucapabilitiesdata/caps_4.2.0.ppc64.xml b/tests/qemucapabilitiesdata/caps_4.2.0.ppc64.xml
index c6c05c5383..a0019f2a20 100644
--- a/tests/qemucapabilitiesdata/caps_4.2.0.ppc64.xml
+++ b/tests/qemucapabilitiesdata/caps_4.2.0.ppc64.xml
@@ -194,6 +194,7 @@
   <flag name='fsdev.createmode'/>
   <flag name='dc390'/>
   <flag name='am53c974'/>
+  <flag name='vhost-user-blk'/>
   <version>4001050</version>
   <kvmVersion>0</kvmVersion>
   <microcodeVersion>42900242</microcodeVersion>
diff --git a/tests/qemucapabilitiesdata/caps_4.2.0.s390x.xml b/tests/qemucapabilitiesdata/caps_4.2.0.s390x.xml
index 42a7cca50a..41db85be6b 100644
--- a/tests/qemucapabilitiesdata/caps_4.2.0.s390x.xml
+++ b/tests/qemucapabilitiesdata/caps_4.2.0.s390x.xml
@@ -155,6 +155,7 @@
   <flag name='migration-param.xbzrle-cache-size'/>
   <flag name='blockdev-hostdev-scsi'/>
   <flag name='fsdev.createmode'/>
+  <flag name='vhost-user-blk'/>
   <version>4002000</version>
   <kvmVersion>0</kvmVersion>
   <microcodeVersion>39100242</microcodeVersion>
diff --git a/tests/qemucapabilitiesdata/caps_4.2.0.x86_64.xml b/tests/qemucapabilitiesdata/caps_4.2.0.x86_64.xml
index 836255f80b..976eaf347b 100644
--- a/tests/qemucapabilitiesdata/caps_4.2.0.x86_64.xml
+++ b/tests/qemucapabilitiesdata/caps_4.2.0.x86_64.xml
@@ -241,6 +241,7 @@
   <flag name='dc390'/>
   <flag name='am53c974'/>
   <flag name='virtio-pmem-pci'/>
+  <flag name='vhost-user-blk'/>
   <version>4002000</version>
   <kvmVersion>0</kvmVersion>
   <microcodeVersion>43100242</microcodeVersion>
diff --git a/tests/qemucapabilitiesdata/caps_5.0.0.aarch64.xml b/tests/qemucapabilitiesdata/caps_5.0.0.aarch64.xml
index d584642bff..b9963bbd7e 100644
--- a/tests/qemucapabilitiesdata/caps_5.0.0.aarch64.xml
+++ b/tests/qemucapabilitiesdata/caps_5.0.0.aarch64.xml
@@ -203,6 +203,7 @@
   <flag name='fsdev.createmode'/>
   <flag name='dc390'/>
   <flag name='am53c974'/>
+  <flag name='vhost-user-blk'/>
   <version>5000000</version>
   <kvmVersion>0</kvmVersion>
   <microcodeVersion>61700241</microcodeVersion>
diff --git a/tests/qemucapabilitiesdata/caps_5.0.0.ppc64.xml b/tests/qemucapabilitiesdata/caps_5.0.0.ppc64.xml
index 596bccd70a..46edacd44b 100644
--- a/tests/qemucapabilitiesdata/caps_5.0.0.ppc64.xml
+++ b/tests/qemucapabilitiesdata/caps_5.0.0.ppc64.xml
@@ -212,6 +212,7 @@
   <flag name='fsdev.createmode'/>
   <flag name='dc390'/>
   <flag name='am53c974'/>
+  <flag name='vhost-user-blk'/>
   <version>5000000</version>
   <kvmVersion>0</kvmVersion>
   <microcodeVersion>42900241</microcodeVersion>
diff --git a/tests/qemucapabilitiesdata/caps_5.0.0.riscv64.xml b/tests/qemucapabilitiesdata/caps_5.0.0.riscv64.xml
index eb760f2911..496b75da20 100644
--- a/tests/qemucapabilitiesdata/caps_5.0.0.riscv64.xml
+++ b/tests/qemucapabilitiesdata/caps_5.0.0.riscv64.xml
@@ -199,6 +199,7 @@
   <flag name='fsdev.createmode'/>
   <flag name='dc390'/>
   <flag name='am53c974'/>
+  <flag name='vhost-user-blk'/>
   <version>5000000</version>
   <kvmVersion>0</kvmVersion>
   <microcodeVersion>0</microcodeVersion>
diff --git a/tests/qemucapabilitiesdata/caps_5.0.0.x86_64.xml b/tests/qemucapabilitiesdata/caps_5.0.0.x86_64.xml
index c6dcbf1329..f5bcc9ed83 100644
--- a/tests/qemucapabilitiesdata/caps_5.0.0.x86_64.xml
+++ b/tests/qemucapabilitiesdata/caps_5.0.0.x86_64.xml
@@ -248,6 +248,7 @@
   <flag name='dc390'/>
   <flag name='am53c974'/>
   <flag name='virtio-pmem-pci'/>
+  <flag name='vhost-user-blk'/>
   <version>5000000</version>
   <kvmVersion>0</kvmVersion>
   <microcodeVersion>43100241</microcodeVersion>
diff --git a/tests/qemucapabilitiesdata/caps_5.1.0.x86_64.xml b/tests/qemucapabilitiesdata/caps_5.1.0.x86_64.xml
index cded14a96a..f7d0be69cb 100644
--- a/tests/qemucapabilitiesdata/caps_5.1.0.x86_64.xml
+++ b/tests/qemucapabilitiesdata/caps_5.1.0.x86_64.xml
@@ -250,6 +250,7 @@
   <flag name='dc390'/>
   <flag name='am53c974'/>
   <flag name='virtio-pmem-pci'/>
+  <flag name='vhost-user-blk'/>
   <version>5001000</version>
   <kvmVersion>0</kvmVersion>
   <microcodeVersion>43100242</microcodeVersion>
diff --git a/tests/qemucapabilitiesdata/caps_5.2.0.aarch64.xml b/tests/qemucapabilitiesdata/caps_5.2.0.aarch64.xml
index cac9b40528..6b40141f15 100644
--- a/tests/qemucapabilitiesdata/caps_5.2.0.aarch64.xml
+++ b/tests/qemucapabilitiesdata/caps_5.2.0.aarch64.xml
@@ -207,6 +207,7 @@
   <flag name='fsdev.createmode'/>
   <flag name='dc390'/>
   <flag name='am53c974'/>
+  <flag name='vhost-user-blk'/>
   <version>5002000</version>
   <kvmVersion>0</kvmVersion>
   <microcodeVersion>61700243</microcodeVersion>
diff --git a/tests/qemucapabilitiesdata/caps_5.2.0.ppc64.xml b/tests/qemucapabilitiesdata/caps_5.2.0.ppc64.xml
index e92201ad43..298139cdd7 100644
--- a/tests/qemucapabilitiesdata/caps_5.2.0.ppc64.xml
+++ b/tests/qemucapabilitiesdata/caps_5.2.0.ppc64.xml
@@ -214,6 +214,7 @@
   <flag name='fsdev.createmode'/>
   <flag name='dc390'/>
   <flag name='am53c974'/>
+  <flag name='vhost-user-blk'/>
   <version>5002000</version>
   <kvmVersion>0</kvmVersion>
   <microcodeVersion>42900243</microcodeVersion>
diff --git a/tests/qemucapabilitiesdata/caps_5.2.0.riscv64.xml b/tests/qemucapabilitiesdata/caps_5.2.0.riscv64.xml
index bee7f547c7..0457018c93 100644
--- a/tests/qemucapabilitiesdata/caps_5.2.0.riscv64.xml
+++ b/tests/qemucapabilitiesdata/caps_5.2.0.riscv64.xml
@@ -201,6 +201,7 @@
   <flag name='fsdev.createmode'/>
   <flag name='dc390'/>
   <flag name='am53c974'/>
+  <flag name='vhost-user-blk'/>
   <version>5002000</version>
   <kvmVersion>0</kvmVersion>
   <microcodeVersion>0</microcodeVersion>
diff --git a/tests/qemucapabilitiesdata/caps_5.2.0.s390x.xml b/tests/qemucapabilitiesdata/caps_5.2.0.s390x.xml
index 15e7ee84c6..b59404230c 100644
--- a/tests/qemucapabilitiesdata/caps_5.2.0.s390x.xml
+++ b/tests/qemucapabilitiesdata/caps_5.2.0.s390x.xml
@@ -162,6 +162,7 @@
   <flag name='block-export-add'/>
   <flag name='netdev.vhost-vdpa'/>
   <flag name='fsdev.createmode'/>
+  <flag name='vhost-user-blk'/>
   <version>5002000</version>
   <kvmVersion>0</kvmVersion>
   <microcodeVersion>39100243</microcodeVersion>
diff --git a/tests/qemucapabilitiesdata/caps_5.2.0.x86_64.xml b/tests/qemucapabilitiesdata/caps_5.2.0.x86_64.xml
index 69b1484d8b..52a755ffc8 100644
--- a/tests/qemucapabilitiesdata/caps_5.2.0.x86_64.xml
+++ b/tests/qemucapabilitiesdata/caps_5.2.0.x86_64.xml
@@ -251,6 +251,7 @@
   <flag name='dc390'/>
   <flag name='am53c974'/>
   <flag name='virtio-pmem-pci'/>
+  <flag name='vhost-user-blk'/>
   <version>5002000</version>
   <kvmVersion>0</kvmVersion>
   <microcodeVersion>43100243</microcodeVersion>
diff --git a/tests/qemucapabilitiesdata/caps_6.0.0.x86_64.xml b/tests/qemucapabilitiesdata/caps_6.0.0.x86_64.xml
index 83d635177d..0cb94e02e8 100644
--- a/tests/qemucapabilitiesdata/caps_6.0.0.x86_64.xml
+++ b/tests/qemucapabilitiesdata/caps_6.0.0.x86_64.xml
@@ -252,6 +252,7 @@
   <flag name='am53c974'/>
   <flag name='virtio-pmem-pci'/>
   <flag name='vhost-user-fs.bootindex'/>
+  <flag name='vhost-user-blk'/>
   <version>5002050</version>
   <kvmVersion>0</kvmVersion>
   <microcodeVersion>43100242</microcodeVersion>