diff --git a/src/qemu/qemu_capabilities.c b/src/qemu/qemu_capabilities.c
index f27a621f8c..3c04e9fb25 100644
--- a/src/qemu/qemu_capabilities.c
+++ b/src/qemu/qemu_capabilities.c
@@ -638,6 +638,7 @@ VIR_ENUM_IMPL(virQEMUCaps,
               "query-display-options", /* QEMU_CAPS_QUERY_DISPLAY_OPTIONS */
               "s390-pv-guest", /* QEMU_CAPS_S390_PV_GUEST */
               "set-action", /* QEMU_CAPS_SET_ACTION */
+              "virtio-blk.queue-size", /* QEMU_CAPS_VIRTIO_BLK_QUEUE_SIZE */
     );
 
 
@@ -1397,6 +1398,7 @@ static struct virQEMUCapsDevicePropsFlags virQEMUCapsDevicePropsVirtioBlk[] = {
     { "scsi", QEMU_CAPS_VIRTIO_BLK_SCSI, virQEMUCapsDevicePropsVirtioBlkSCSIDefault },
     { "logical_block_size", QEMU_CAPS_BLOCKIO, NULL },
     { "num-queues", QEMU_CAPS_VIRTIO_BLK_NUM_QUEUES, NULL },
+    { "queue-size", QEMU_CAPS_VIRTIO_BLK_QUEUE_SIZE, NULL },
     { "share-rw", QEMU_CAPS_DISK_SHARE_RW, NULL },
     { "disable-legacy", QEMU_CAPS_VIRTIO_PCI_DISABLE_LEGACY, NULL },
     { "iommu_platform", QEMU_CAPS_VIRTIO_PCI_IOMMU_PLATFORM, NULL },
diff --git a/src/qemu/qemu_capabilities.h b/src/qemu/qemu_capabilities.h
index f3379f556c..4e8a4b6eae 100644
--- a/src/qemu/qemu_capabilities.h
+++ b/src/qemu/qemu_capabilities.h
@@ -618,6 +618,7 @@ typedef enum { /* virQEMUCapsFlags grouping marker for syntax-check */
     QEMU_CAPS_QUERY_DISPLAY_OPTIONS, /* 'query-display-options' qmp command present */
     QEMU_CAPS_S390_PV_GUEST, /* -object s390-pv-guest,... */
     QEMU_CAPS_SET_ACTION, /* 'set-action' QMP command */
+    QEMU_CAPS_VIRTIO_BLK_QUEUE_SIZE, /* virtio-blk-*.queue-size */
 
     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 3cd71919bc..4c7208d641 100644
--- a/tests/qemucapabilitiesdata/caps_2.12.0.aarch64.xml
+++ b/tests/qemucapabilitiesdata/caps_2.12.0.aarch64.xml
@@ -158,6 +158,7 @@
   <flag name='vnc-opts'/>
   <flag name='rotation-rate'/>
   <flag name='input-linux'/>
+  <flag name='virtio-blk.queue-size'/>
   <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 2081592b51..2b6e7e7135 100644
--- a/tests/qemucapabilitiesdata/caps_2.12.0.ppc64.xml
+++ b/tests/qemucapabilitiesdata/caps_2.12.0.ppc64.xml
@@ -157,6 +157,7 @@
   <flag name='cpu-max'/>
   <flag name='vnc-opts'/>
   <flag name='input-linux'/>
+  <flag name='virtio-blk.queue-size'/>
   <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 deabb614ba..05bd930e64 100644
--- a/tests/qemucapabilitiesdata/caps_2.12.0.s390x.xml
+++ b/tests/qemucapabilitiesdata/caps_2.12.0.s390x.xml
@@ -122,6 +122,7 @@
   <flag name='vhost-user-blk'/>
   <flag name='vnc-opts'/>
   <flag name='input-linux'/>
+  <flag name='virtio-blk.queue-size'/>
   <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 d74dc5ebd5..ea9ed17e09 100644
--- a/tests/qemucapabilitiesdata/caps_2.12.0.x86_64.xml
+++ b/tests/qemucapabilitiesdata/caps_2.12.0.x86_64.xml
@@ -200,6 +200,7 @@
   <flag name='cpu-max'/>
   <flag name='vnc-opts'/>
   <flag name='input-linux'/>
+  <flag name='virtio-blk.queue-size'/>
   <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 19af15c345..ddb52837c9 100644
--- a/tests/qemucapabilitiesdata/caps_3.0.0.ppc64.xml
+++ b/tests/qemucapabilitiesdata/caps_3.0.0.ppc64.xml
@@ -159,6 +159,7 @@
   <flag name='cpu-max'/>
   <flag name='vnc-opts'/>
   <flag name='input-linux'/>
+  <flag name='virtio-blk.queue-size'/>
   <version>2012050</version>
   <kvmVersion>0</kvmVersion>
   <microcodeVersion>42900239</microcodeVersion>
diff --git a/tests/qemucapabilitiesdata/caps_3.0.0.s390x.xml b/tests/qemucapabilitiesdata/caps_3.0.0.s390x.xml
index 8e90d32de9..a573d88160 100644
--- a/tests/qemucapabilitiesdata/caps_3.0.0.s390x.xml
+++ b/tests/qemucapabilitiesdata/caps_3.0.0.s390x.xml
@@ -125,6 +125,7 @@
   <flag name='vhost-user-blk'/>
   <flag name='vnc-opts'/>
   <flag name='input-linux'/>
+  <flag name='virtio-blk.queue-size'/>
   <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 2cc3c11820..b3c564e0b9 100644
--- a/tests/qemucapabilitiesdata/caps_3.0.0.x86_64.xml
+++ b/tests/qemucapabilitiesdata/caps_3.0.0.x86_64.xml
@@ -206,6 +206,7 @@
   <flag name='cpu-max'/>
   <flag name='vnc-opts'/>
   <flag name='input-linux'/>
+  <flag name='virtio-blk.queue-size'/>
   <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 9c217263ca..f384a7b9db 100644
--- a/tests/qemucapabilitiesdata/caps_3.1.0.ppc64.xml
+++ b/tests/qemucapabilitiesdata/caps_3.1.0.ppc64.xml
@@ -164,6 +164,7 @@
   <flag name='cpu-max'/>
   <flag name='vnc-opts'/>
   <flag name='input-linux'/>
+  <flag name='virtio-blk.queue-size'/>
   <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 bcc4c44d28..54a17f140b 100644
--- a/tests/qemucapabilitiesdata/caps_3.1.0.x86_64.xml
+++ b/tests/qemucapabilitiesdata/caps_3.1.0.x86_64.xml
@@ -210,6 +210,7 @@
   <flag name='vnc-opts'/>
   <flag name='input-linux'/>
   <flag name='query-display-options'/>
+  <flag name='virtio-blk.queue-size'/>
   <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 efb891fa01..7b2f6c2f28 100644
--- a/tests/qemucapabilitiesdata/caps_4.0.0.aarch64.xml
+++ b/tests/qemucapabilitiesdata/caps_4.0.0.aarch64.xml
@@ -174,6 +174,7 @@
   <flag name='rotation-rate'/>
   <flag name='input-linux'/>
   <flag name='query-display-options'/>
+  <flag name='virtio-blk.queue-size'/>
   <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 1e2b7c7fe6..2107136a5d 100644
--- a/tests/qemucapabilitiesdata/caps_4.0.0.ppc64.xml
+++ b/tests/qemucapabilitiesdata/caps_4.0.0.ppc64.xml
@@ -181,6 +181,7 @@
   <flag name='rotation-rate'/>
   <flag name='input-linux'/>
   <flag name='query-display-options'/>
+  <flag name='virtio-blk.queue-size'/>
   <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 5872ecd491..9ec5904595 100644
--- a/tests/qemucapabilitiesdata/caps_4.0.0.riscv32.xml
+++ b/tests/qemucapabilitiesdata/caps_4.0.0.riscv32.xml
@@ -173,6 +173,7 @@
   <flag name='rotation-rate'/>
   <flag name='input-linux'/>
   <flag name='query-display-options'/>
+  <flag name='virtio-blk.queue-size'/>
   <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 bb76faae2b..d2d13be129 100644
--- a/tests/qemucapabilitiesdata/caps_4.0.0.riscv64.xml
+++ b/tests/qemucapabilitiesdata/caps_4.0.0.riscv64.xml
@@ -173,6 +173,7 @@
   <flag name='rotation-rate'/>
   <flag name='input-linux'/>
   <flag name='query-display-options'/>
+  <flag name='virtio-blk.queue-size'/>
   <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 51074b4f37..9a5cc1fcc7 100644
--- a/tests/qemucapabilitiesdata/caps_4.0.0.s390x.xml
+++ b/tests/qemucapabilitiesdata/caps_4.0.0.s390x.xml
@@ -137,6 +137,7 @@
   <flag name='rotation-rate'/>
   <flag name='input-linux'/>
   <flag name='query-display-options'/>
+  <flag name='virtio-blk.queue-size'/>
   <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 e999d7574c..584d2f7aea 100644
--- a/tests/qemucapabilitiesdata/caps_4.0.0.x86_64.xml
+++ b/tests/qemucapabilitiesdata/caps_4.0.0.x86_64.xml
@@ -218,6 +218,7 @@
   <flag name='rotation-rate'/>
   <flag name='input-linux'/>
   <flag name='query-display-options'/>
+  <flag name='virtio-blk.queue-size'/>
   <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 80c3e3cbed..27eb5531bd 100644
--- a/tests/qemucapabilitiesdata/caps_4.1.0.x86_64.xml
+++ b/tests/qemucapabilitiesdata/caps_4.1.0.x86_64.xml
@@ -225,6 +225,7 @@
   <flag name='rotation-rate'/>
   <flag name='input-linux'/>
   <flag name='query-display-options'/>
+  <flag name='virtio-blk.queue-size'/>
   <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 8116624181..600e4a5649 100644
--- a/tests/qemucapabilitiesdata/caps_4.2.0.aarch64.xml
+++ b/tests/qemucapabilitiesdata/caps_4.2.0.aarch64.xml
@@ -189,6 +189,7 @@
   <flag name='rotation-rate'/>
   <flag name='input-linux'/>
   <flag name='query-display-options'/>
+  <flag name='virtio-blk.queue-size'/>
   <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 d37c9b3426..68318e2eaa 100644
--- a/tests/qemucapabilitiesdata/caps_4.2.0.ppc64.xml
+++ b/tests/qemucapabilitiesdata/caps_4.2.0.ppc64.xml
@@ -188,6 +188,7 @@
   <flag name='rotation-rate'/>
   <flag name='input-linux'/>
   <flag name='query-display-options'/>
+  <flag name='virtio-blk.queue-size'/>
   <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 258e382232..5b3467d22c 100644
--- a/tests/qemucapabilitiesdata/caps_4.2.0.s390x.xml
+++ b/tests/qemucapabilitiesdata/caps_4.2.0.s390x.xml
@@ -150,6 +150,7 @@
   <flag name='rotation-rate'/>
   <flag name='input-linux'/>
   <flag name='query-display-options'/>
+  <flag name='virtio-blk.queue-size'/>
   <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 99f9375c04..193e401b20 100644
--- a/tests/qemucapabilitiesdata/caps_4.2.0.x86_64.xml
+++ b/tests/qemucapabilitiesdata/caps_4.2.0.x86_64.xml
@@ -236,6 +236,7 @@
   <flag name='rotation-rate'/>
   <flag name='input-linux'/>
   <flag name='query-display-options'/>
+  <flag name='virtio-blk.queue-size'/>
   <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 4ce8244540..826b398bd8 100644
--- a/tests/qemucapabilitiesdata/caps_5.0.0.aarch64.xml
+++ b/tests/qemucapabilitiesdata/caps_5.0.0.aarch64.xml
@@ -199,6 +199,7 @@
   <flag name='rotation-rate'/>
   <flag name='input-linux'/>
   <flag name='query-display-options'/>
+  <flag name='virtio-blk.queue-size'/>
   <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 07e00008ee..0365998fc7 100644
--- a/tests/qemucapabilitiesdata/caps_5.0.0.ppc64.xml
+++ b/tests/qemucapabilitiesdata/caps_5.0.0.ppc64.xml
@@ -207,6 +207,7 @@
   <flag name='rotation-rate'/>
   <flag name='input-linux'/>
   <flag name='query-display-options'/>
+  <flag name='virtio-blk.queue-size'/>
   <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 1bbb9b98cd..fe09a6868a 100644
--- a/tests/qemucapabilitiesdata/caps_5.0.0.riscv64.xml
+++ b/tests/qemucapabilitiesdata/caps_5.0.0.riscv64.xml
@@ -193,6 +193,7 @@
   <flag name='rotation-rate'/>
   <flag name='input-linux'/>
   <flag name='query-display-options'/>
+  <flag name='virtio-blk.queue-size'/>
   <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 03fc7d4106..aa3e922098 100644
--- a/tests/qemucapabilitiesdata/caps_5.0.0.x86_64.xml
+++ b/tests/qemucapabilitiesdata/caps_5.0.0.x86_64.xml
@@ -243,6 +243,7 @@
   <flag name='rotation-rate'/>
   <flag name='input-linux'/>
   <flag name='query-display-options'/>
+  <flag name='virtio-blk.queue-size'/>
   <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 fc0b502ef9..a40a506f5c 100644
--- a/tests/qemucapabilitiesdata/caps_5.1.0.x86_64.xml
+++ b/tests/qemucapabilitiesdata/caps_5.1.0.x86_64.xml
@@ -245,6 +245,7 @@
   <flag name='rotation-rate'/>
   <flag name='input-linux'/>
   <flag name='query-display-options'/>
+  <flag name='virtio-blk.queue-size'/>
   <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 4e31d8245e..fc0fd3f5ec 100644
--- a/tests/qemucapabilitiesdata/caps_5.2.0.aarch64.xml
+++ b/tests/qemucapabilitiesdata/caps_5.2.0.aarch64.xml
@@ -203,6 +203,7 @@
   <flag name='rotation-rate'/>
   <flag name='input-linux'/>
   <flag name='query-display-options'/>
+  <flag name='virtio-blk.queue-size'/>
   <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 ac81364857..ea5c58a8c1 100644
--- a/tests/qemucapabilitiesdata/caps_5.2.0.ppc64.xml
+++ b/tests/qemucapabilitiesdata/caps_5.2.0.ppc64.xml
@@ -209,6 +209,7 @@
   <flag name='rotation-rate'/>
   <flag name='input-linux'/>
   <flag name='query-display-options'/>
+  <flag name='virtio-blk.queue-size'/>
   <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 21a1a5c3dd..a23b432037 100644
--- a/tests/qemucapabilitiesdata/caps_5.2.0.riscv64.xml
+++ b/tests/qemucapabilitiesdata/caps_5.2.0.riscv64.xml
@@ -195,6 +195,7 @@
   <flag name='rotation-rate'/>
   <flag name='input-linux'/>
   <flag name='query-display-options'/>
+  <flag name='virtio-blk.queue-size'/>
   <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 13caca9626..0dba47beed 100644
--- a/tests/qemucapabilitiesdata/caps_5.2.0.s390x.xml
+++ b/tests/qemucapabilitiesdata/caps_5.2.0.s390x.xml
@@ -157,6 +157,7 @@
   <flag name='rotation-rate'/>
   <flag name='input-linux'/>
   <flag name='query-display-options'/>
+  <flag name='virtio-blk.queue-size'/>
   <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 cb1226fc04..4973b08378 100644
--- a/tests/qemucapabilitiesdata/caps_5.2.0.x86_64.xml
+++ b/tests/qemucapabilitiesdata/caps_5.2.0.x86_64.xml
@@ -246,6 +246,7 @@
   <flag name='rotation-rate'/>
   <flag name='input-linux'/>
   <flag name='query-display-options'/>
+  <flag name='virtio-blk.queue-size'/>
   <version>5002000</version>
   <kvmVersion>0</kvmVersion>
   <microcodeVersion>43100243</microcodeVersion>
diff --git a/tests/qemucapabilitiesdata/caps_6.0.0.aarch64.xml b/tests/qemucapabilitiesdata/caps_6.0.0.aarch64.xml
index dcc41ed067..acf2a6bbdc 100644
--- a/tests/qemucapabilitiesdata/caps_6.0.0.aarch64.xml
+++ b/tests/qemucapabilitiesdata/caps_6.0.0.aarch64.xml
@@ -211,6 +211,7 @@
   <flag name='confidential-guest-support'/>
   <flag name='query-display-options'/>
   <flag name='set-action'/>
+  <flag name='virtio-blk.queue-size'/>
   <version>6000000</version>
   <kvmVersion>0</kvmVersion>
   <microcodeVersion>61700242</microcodeVersion>
diff --git a/tests/qemucapabilitiesdata/caps_6.0.0.s390x.xml b/tests/qemucapabilitiesdata/caps_6.0.0.s390x.xml
index ebcca6e114..c704f0085c 100644
--- a/tests/qemucapabilitiesdata/caps_6.0.0.s390x.xml
+++ b/tests/qemucapabilitiesdata/caps_6.0.0.s390x.xml
@@ -165,6 +165,7 @@
   <flag name='query-display-options'/>
   <flag name='s390-pv-guest'/>
   <flag name='set-action'/>
+  <flag name='virtio-blk.queue-size'/>
   <version>6000000</version>
   <kvmVersion>0</kvmVersion>
   <microcodeVersion>39100242</microcodeVersion>
diff --git a/tests/qemucapabilitiesdata/caps_6.0.0.x86_64.xml b/tests/qemucapabilitiesdata/caps_6.0.0.x86_64.xml
index d03b8aa726..5c0391af34 100644
--- a/tests/qemucapabilitiesdata/caps_6.0.0.x86_64.xml
+++ b/tests/qemucapabilitiesdata/caps_6.0.0.x86_64.xml
@@ -254,6 +254,7 @@
   <flag name='confidential-guest-support'/>
   <flag name='query-display-options'/>
   <flag name='set-action'/>
+  <flag name='virtio-blk.queue-size'/>
   <version>6000000</version>
   <kvmVersion>0</kvmVersion>
   <microcodeVersion>43100242</microcodeVersion>
diff --git a/tests/qemucapabilitiesdata/caps_6.1.0.x86_64.xml b/tests/qemucapabilitiesdata/caps_6.1.0.x86_64.xml
index 8239f4266a..9446fa274f 100644
--- a/tests/qemucapabilitiesdata/caps_6.1.0.x86_64.xml
+++ b/tests/qemucapabilitiesdata/caps_6.1.0.x86_64.xml
@@ -256,6 +256,7 @@
   <flag name='confidential-guest-support'/>
   <flag name='query-display-options'/>
   <flag name='set-action'/>
+  <flag name='virtio-blk.queue-size'/>
   <version>6001000</version>
   <kvmVersion>0</kvmVersion>
   <microcodeVersion>43100243</microcodeVersion>