diff --git a/tests/domaincapsdata/qemu_3.1.0-q35.x86_64.xml b/tests/domaincapsdata/qemu_3.1.0-q35.x86_64.xml
index c4277c53a1..0cbfd675fa 100644
--- a/tests/domaincapsdata/qemu_3.1.0-q35.x86_64.xml
+++ b/tests/domaincapsdata/qemu_3.1.0-q35.x86_64.xml
@@ -198,6 +198,9 @@
         <value>passthrough</value>
         <value>emulator</value>
       </enum>
+      <enum name='backendVersion'>
+        <value>1.2</value>
+      </enum>
     </tpm>
   </devices>
   <features>
diff --git a/tests/domaincapsdata/qemu_3.1.0-tcg.x86_64.xml b/tests/domaincapsdata/qemu_3.1.0-tcg.x86_64.xml
index 2a65cb0ad9..823af73010 100644
--- a/tests/domaincapsdata/qemu_3.1.0-tcg.x86_64.xml
+++ b/tests/domaincapsdata/qemu_3.1.0-tcg.x86_64.xml
@@ -217,6 +217,9 @@
         <value>passthrough</value>
         <value>emulator</value>
       </enum>
+      <enum name='backendVersion'>
+        <value>1.2</value>
+      </enum>
     </tpm>
   </devices>
   <features>
diff --git a/tests/domaincapsdata/qemu_3.1.0.x86_64.xml b/tests/domaincapsdata/qemu_3.1.0.x86_64.xml
index 6e3ddda356..0b1f60e89d 100644
--- a/tests/domaincapsdata/qemu_3.1.0.x86_64.xml
+++ b/tests/domaincapsdata/qemu_3.1.0.x86_64.xml
@@ -198,6 +198,9 @@
         <value>passthrough</value>
         <value>emulator</value>
       </enum>
+      <enum name='backendVersion'>
+        <value>1.2</value>
+      </enum>
     </tpm>
   </devices>
   <features>
diff --git a/tests/domaincapsdata/qemu_4.0.0-q35.x86_64.xml b/tests/domaincapsdata/qemu_4.0.0-q35.x86_64.xml
index 8f3911b4b3..4cfa127b7a 100644
--- a/tests/domaincapsdata/qemu_4.0.0-q35.x86_64.xml
+++ b/tests/domaincapsdata/qemu_4.0.0-q35.x86_64.xml
@@ -198,6 +198,9 @@
         <value>passthrough</value>
         <value>emulator</value>
       </enum>
+      <enum name='backendVersion'>
+        <value>1.2</value>
+      </enum>
     </tpm>
   </devices>
   <features>
diff --git a/tests/domaincapsdata/qemu_4.0.0-tcg.x86_64.xml b/tests/domaincapsdata/qemu_4.0.0-tcg.x86_64.xml
index a4dc7bafc9..06baee7f68 100644
--- a/tests/domaincapsdata/qemu_4.0.0-tcg.x86_64.xml
+++ b/tests/domaincapsdata/qemu_4.0.0-tcg.x86_64.xml
@@ -217,6 +217,9 @@
         <value>passthrough</value>
         <value>emulator</value>
       </enum>
+      <enum name='backendVersion'>
+        <value>1.2</value>
+      </enum>
     </tpm>
   </devices>
   <features>
diff --git a/tests/domaincapsdata/qemu_4.0.0.x86_64.xml b/tests/domaincapsdata/qemu_4.0.0.x86_64.xml
index 24e732d9c3..6d6e9bbc3f 100644
--- a/tests/domaincapsdata/qemu_4.0.0.x86_64.xml
+++ b/tests/domaincapsdata/qemu_4.0.0.x86_64.xml
@@ -198,6 +198,9 @@
         <value>passthrough</value>
         <value>emulator</value>
       </enum>
+      <enum name='backendVersion'>
+        <value>1.2</value>
+      </enum>
     </tpm>
   </devices>
   <features>
diff --git a/tests/domaincapsdata/qemu_4.1.0-q35.x86_64.xml b/tests/domaincapsdata/qemu_4.1.0-q35.x86_64.xml
index 3ee7feea48..1b598b6be1 100644
--- a/tests/domaincapsdata/qemu_4.1.0-q35.x86_64.xml
+++ b/tests/domaincapsdata/qemu_4.1.0-q35.x86_64.xml
@@ -204,6 +204,9 @@
         <value>passthrough</value>
         <value>emulator</value>
       </enum>
+      <enum name='backendVersion'>
+        <value>1.2</value>
+      </enum>
     </tpm>
   </devices>
   <features>
diff --git a/tests/domaincapsdata/qemu_4.1.0-tcg.x86_64.xml b/tests/domaincapsdata/qemu_4.1.0-tcg.x86_64.xml
index b20c02cb68..ca07b7ae82 100644
--- a/tests/domaincapsdata/qemu_4.1.0-tcg.x86_64.xml
+++ b/tests/domaincapsdata/qemu_4.1.0-tcg.x86_64.xml
@@ -220,6 +220,9 @@
         <value>passthrough</value>
         <value>emulator</value>
       </enum>
+      <enum name='backendVersion'>
+        <value>1.2</value>
+      </enum>
     </tpm>
   </devices>
   <features>
diff --git a/tests/domaincapsdata/qemu_4.1.0.x86_64.xml b/tests/domaincapsdata/qemu_4.1.0.x86_64.xml
index 0f1d398e2c..11bf14708c 100644
--- a/tests/domaincapsdata/qemu_4.1.0.x86_64.xml
+++ b/tests/domaincapsdata/qemu_4.1.0.x86_64.xml
@@ -204,6 +204,9 @@
         <value>passthrough</value>
         <value>emulator</value>
       </enum>
+      <enum name='backendVersion'>
+        <value>1.2</value>
+      </enum>
     </tpm>
   </devices>
   <features>
diff --git a/tests/domaincapsdata/qemu_4.2.0-q35.x86_64.xml b/tests/domaincapsdata/qemu_4.2.0-q35.x86_64.xml
index c8a77cdd41..0ec4c570ac 100644
--- a/tests/domaincapsdata/qemu_4.2.0-q35.x86_64.xml
+++ b/tests/domaincapsdata/qemu_4.2.0-q35.x86_64.xml
@@ -212,6 +212,9 @@
         <value>passthrough</value>
         <value>emulator</value>
       </enum>
+      <enum name='backendVersion'>
+        <value>1.2</value>
+      </enum>
     </tpm>
   </devices>
   <features>
diff --git a/tests/domaincapsdata/qemu_4.2.0-tcg.x86_64.xml b/tests/domaincapsdata/qemu_4.2.0-tcg.x86_64.xml
index d0ee3f7b7a..4e0cb08b72 100644
--- a/tests/domaincapsdata/qemu_4.2.0-tcg.x86_64.xml
+++ b/tests/domaincapsdata/qemu_4.2.0-tcg.x86_64.xml
@@ -227,6 +227,9 @@
         <value>passthrough</value>
         <value>emulator</value>
       </enum>
+      <enum name='backendVersion'>
+        <value>1.2</value>
+      </enum>
     </tpm>
   </devices>
   <features>
diff --git a/tests/domaincapsdata/qemu_4.2.0.ppc64.xml b/tests/domaincapsdata/qemu_4.2.0.ppc64.xml
index 4c3a2c6d98..e21ba9372b 100644
--- a/tests/domaincapsdata/qemu_4.2.0.ppc64.xml
+++ b/tests/domaincapsdata/qemu_4.2.0.ppc64.xml
@@ -132,6 +132,9 @@
         <value>spapr-tpm-proxy</value>
       </enum>
       <enum name='backendModel'/>
+      <enum name='backendVersion'>
+        <value>1.2</value>
+      </enum>
     </tpm>
   </devices>
   <features>
diff --git a/tests/domaincapsdata/qemu_4.2.0.x86_64.xml b/tests/domaincapsdata/qemu_4.2.0.x86_64.xml
index 6578fd04b6..d8793bb38a 100644
--- a/tests/domaincapsdata/qemu_4.2.0.x86_64.xml
+++ b/tests/domaincapsdata/qemu_4.2.0.x86_64.xml
@@ -212,6 +212,9 @@
         <value>passthrough</value>
         <value>emulator</value>
       </enum>
+      <enum name='backendVersion'>
+        <value>1.2</value>
+      </enum>
     </tpm>
   </devices>
   <features>
diff --git a/tests/domaincapsdata/qemu_5.0.0-q35.x86_64.xml b/tests/domaincapsdata/qemu_5.0.0-q35.x86_64.xml
index 8a6797c2f1..036e446c64 100644
--- a/tests/domaincapsdata/qemu_5.0.0-q35.x86_64.xml
+++ b/tests/domaincapsdata/qemu_5.0.0-q35.x86_64.xml
@@ -214,6 +214,9 @@
         <value>passthrough</value>
         <value>emulator</value>
       </enum>
+      <enum name='backendVersion'>
+        <value>1.2</value>
+      </enum>
     </tpm>
   </devices>
   <features>
diff --git a/tests/domaincapsdata/qemu_5.0.0-tcg.x86_64.xml b/tests/domaincapsdata/qemu_5.0.0-tcg.x86_64.xml
index d277c96426..4df4e86cf1 100644
--- a/tests/domaincapsdata/qemu_5.0.0-tcg.x86_64.xml
+++ b/tests/domaincapsdata/qemu_5.0.0-tcg.x86_64.xml
@@ -229,6 +229,9 @@
         <value>passthrough</value>
         <value>emulator</value>
       </enum>
+      <enum name='backendVersion'>
+        <value>1.2</value>
+      </enum>
     </tpm>
   </devices>
   <features>
diff --git a/tests/domaincapsdata/qemu_5.0.0-virt.aarch64.xml b/tests/domaincapsdata/qemu_5.0.0-virt.aarch64.xml
index f8cea230d9..bb8500baa6 100644
--- a/tests/domaincapsdata/qemu_5.0.0-virt.aarch64.xml
+++ b/tests/domaincapsdata/qemu_5.0.0-virt.aarch64.xml
@@ -173,6 +173,9 @@
         <value>passthrough</value>
         <value>emulator</value>
       </enum>
+      <enum name='backendVersion'>
+        <value>1.2</value>
+      </enum>
     </tpm>
   </devices>
   <features>
diff --git a/tests/domaincapsdata/qemu_5.0.0.aarch64.xml b/tests/domaincapsdata/qemu_5.0.0.aarch64.xml
index ab72b7ffeb..e7227d092f 100644
--- a/tests/domaincapsdata/qemu_5.0.0.aarch64.xml
+++ b/tests/domaincapsdata/qemu_5.0.0.aarch64.xml
@@ -171,6 +171,9 @@
         <value>passthrough</value>
         <value>emulator</value>
       </enum>
+      <enum name='backendVersion'>
+        <value>1.2</value>
+      </enum>
     </tpm>
   </devices>
   <features>
diff --git a/tests/domaincapsdata/qemu_5.0.0.ppc64.xml b/tests/domaincapsdata/qemu_5.0.0.ppc64.xml
index d196676b14..cac329fd08 100644
--- a/tests/domaincapsdata/qemu_5.0.0.ppc64.xml
+++ b/tests/domaincapsdata/qemu_5.0.0.ppc64.xml
@@ -138,6 +138,9 @@
         <value>passthrough</value>
         <value>emulator</value>
       </enum>
+      <enum name='backendVersion'>
+        <value>1.2</value>
+      </enum>
     </tpm>
   </devices>
   <features>
diff --git a/tests/domaincapsdata/qemu_5.0.0.x86_64.xml b/tests/domaincapsdata/qemu_5.0.0.x86_64.xml
index 51ca1d98e0..e901d12918 100644
--- a/tests/domaincapsdata/qemu_5.0.0.x86_64.xml
+++ b/tests/domaincapsdata/qemu_5.0.0.x86_64.xml
@@ -214,6 +214,9 @@
         <value>passthrough</value>
         <value>emulator</value>
       </enum>
+      <enum name='backendVersion'>
+        <value>1.2</value>
+      </enum>
     </tpm>
   </devices>
   <features>
diff --git a/tests/domaincapsdata/qemu_5.1.0-q35.x86_64.xml b/tests/domaincapsdata/qemu_5.1.0-q35.x86_64.xml
index 3468fb2e72..df1572c901 100644
--- a/tests/domaincapsdata/qemu_5.1.0-q35.x86_64.xml
+++ b/tests/domaincapsdata/qemu_5.1.0-q35.x86_64.xml
@@ -215,6 +215,9 @@
         <value>passthrough</value>
         <value>emulator</value>
       </enum>
+      <enum name='backendVersion'>
+        <value>1.2</value>
+      </enum>
     </tpm>
   </devices>
   <features>
diff --git a/tests/domaincapsdata/qemu_5.1.0-tcg.x86_64.xml b/tests/domaincapsdata/qemu_5.1.0-tcg.x86_64.xml
index 4f1ffbb2ba..3a6dc7b5fc 100644
--- a/tests/domaincapsdata/qemu_5.1.0-tcg.x86_64.xml
+++ b/tests/domaincapsdata/qemu_5.1.0-tcg.x86_64.xml
@@ -229,6 +229,9 @@
         <value>passthrough</value>
         <value>emulator</value>
       </enum>
+      <enum name='backendVersion'>
+        <value>1.2</value>
+      </enum>
     </tpm>
   </devices>
   <features>
diff --git a/tests/domaincapsdata/qemu_5.1.0.x86_64.xml b/tests/domaincapsdata/qemu_5.1.0.x86_64.xml
index 8ff49c7899..e0e8e0ed12 100644
--- a/tests/domaincapsdata/qemu_5.1.0.x86_64.xml
+++ b/tests/domaincapsdata/qemu_5.1.0.x86_64.xml
@@ -215,6 +215,9 @@
         <value>passthrough</value>
         <value>emulator</value>
       </enum>
+      <enum name='backendVersion'>
+        <value>1.2</value>
+      </enum>
     </tpm>
   </devices>
   <features>
diff --git a/tests/domaincapsdata/qemu_5.2.0-q35.x86_64.xml b/tests/domaincapsdata/qemu_5.2.0-q35.x86_64.xml
index 2301a475eb..6a49f568be 100644
--- a/tests/domaincapsdata/qemu_5.2.0-q35.x86_64.xml
+++ b/tests/domaincapsdata/qemu_5.2.0-q35.x86_64.xml
@@ -215,6 +215,9 @@
         <value>passthrough</value>
         <value>emulator</value>
       </enum>
+      <enum name='backendVersion'>
+        <value>1.2</value>
+      </enum>
     </tpm>
   </devices>
   <features>
diff --git a/tests/domaincapsdata/qemu_5.2.0-tcg.x86_64.xml b/tests/domaincapsdata/qemu_5.2.0-tcg.x86_64.xml
index 6cff0f815e..f41f47c346 100644
--- a/tests/domaincapsdata/qemu_5.2.0-tcg.x86_64.xml
+++ b/tests/domaincapsdata/qemu_5.2.0-tcg.x86_64.xml
@@ -229,6 +229,9 @@
         <value>passthrough</value>
         <value>emulator</value>
       </enum>
+      <enum name='backendVersion'>
+        <value>1.2</value>
+      </enum>
     </tpm>
   </devices>
   <features>
diff --git a/tests/domaincapsdata/qemu_5.2.0-virt.aarch64.xml b/tests/domaincapsdata/qemu_5.2.0-virt.aarch64.xml
index a863a6052d..dfd792c031 100644
--- a/tests/domaincapsdata/qemu_5.2.0-virt.aarch64.xml
+++ b/tests/domaincapsdata/qemu_5.2.0-virt.aarch64.xml
@@ -173,6 +173,9 @@
         <value>passthrough</value>
         <value>emulator</value>
       </enum>
+      <enum name='backendVersion'>
+        <value>1.2</value>
+      </enum>
     </tpm>
   </devices>
   <features>
diff --git a/tests/domaincapsdata/qemu_5.2.0.aarch64.xml b/tests/domaincapsdata/qemu_5.2.0.aarch64.xml
index ab72b7ffeb..e7227d092f 100644
--- a/tests/domaincapsdata/qemu_5.2.0.aarch64.xml
+++ b/tests/domaincapsdata/qemu_5.2.0.aarch64.xml
@@ -171,6 +171,9 @@
         <value>passthrough</value>
         <value>emulator</value>
       </enum>
+      <enum name='backendVersion'>
+        <value>1.2</value>
+      </enum>
     </tpm>
   </devices>
   <features>
diff --git a/tests/domaincapsdata/qemu_5.2.0.ppc64.xml b/tests/domaincapsdata/qemu_5.2.0.ppc64.xml
index b2c0577be9..88e4837ec3 100644
--- a/tests/domaincapsdata/qemu_5.2.0.ppc64.xml
+++ b/tests/domaincapsdata/qemu_5.2.0.ppc64.xml
@@ -138,6 +138,9 @@
         <value>passthrough</value>
         <value>emulator</value>
       </enum>
+      <enum name='backendVersion'>
+        <value>1.2</value>
+      </enum>
     </tpm>
   </devices>
   <features>
diff --git a/tests/domaincapsdata/qemu_5.2.0.x86_64.xml b/tests/domaincapsdata/qemu_5.2.0.x86_64.xml
index 41a54985d7..0a6f72df7e 100644
--- a/tests/domaincapsdata/qemu_5.2.0.x86_64.xml
+++ b/tests/domaincapsdata/qemu_5.2.0.x86_64.xml
@@ -215,6 +215,9 @@
         <value>passthrough</value>
         <value>emulator</value>
       </enum>
+      <enum name='backendVersion'>
+        <value>1.2</value>
+      </enum>
     </tpm>
   </devices>
   <features>
diff --git a/tests/domaincapsdata/qemu_6.0.0-q35.x86_64.xml b/tests/domaincapsdata/qemu_6.0.0-q35.x86_64.xml
index 4595e70f61..40df34edf0 100644
--- a/tests/domaincapsdata/qemu_6.0.0-q35.x86_64.xml
+++ b/tests/domaincapsdata/qemu_6.0.0-q35.x86_64.xml
@@ -216,6 +216,10 @@
         <value>passthrough</value>
         <value>emulator</value>
       </enum>
+      <enum name='backendVersion'>
+        <value>1.2</value>
+        <value>2.0</value>
+      </enum>
     </tpm>
   </devices>
   <features>
diff --git a/tests/domaincapsdata/qemu_6.0.0-tcg.x86_64.xml b/tests/domaincapsdata/qemu_6.0.0-tcg.x86_64.xml
index 65f4459bcb..e563b0cb59 100644
--- a/tests/domaincapsdata/qemu_6.0.0-tcg.x86_64.xml
+++ b/tests/domaincapsdata/qemu_6.0.0-tcg.x86_64.xml
@@ -230,6 +230,10 @@
         <value>passthrough</value>
         <value>emulator</value>
       </enum>
+      <enum name='backendVersion'>
+        <value>1.2</value>
+        <value>2.0</value>
+      </enum>
     </tpm>
   </devices>
   <features>
diff --git a/tests/domaincapsdata/qemu_6.0.0-virt.aarch64.xml b/tests/domaincapsdata/qemu_6.0.0-virt.aarch64.xml
index 61eab9de0e..958c40437f 100644
--- a/tests/domaincapsdata/qemu_6.0.0-virt.aarch64.xml
+++ b/tests/domaincapsdata/qemu_6.0.0-virt.aarch64.xml
@@ -174,6 +174,10 @@
         <value>passthrough</value>
         <value>emulator</value>
       </enum>
+      <enum name='backendVersion'>
+        <value>1.2</value>
+        <value>2.0</value>
+      </enum>
     </tpm>
   </devices>
   <features>
diff --git a/tests/domaincapsdata/qemu_6.0.0.aarch64.xml b/tests/domaincapsdata/qemu_6.0.0.aarch64.xml
index fa722b5fd3..4164bf49f7 100644
--- a/tests/domaincapsdata/qemu_6.0.0.aarch64.xml
+++ b/tests/domaincapsdata/qemu_6.0.0.aarch64.xml
@@ -172,6 +172,10 @@
         <value>passthrough</value>
         <value>emulator</value>
       </enum>
+      <enum name='backendVersion'>
+        <value>1.2</value>
+        <value>2.0</value>
+      </enum>
     </tpm>
   </devices>
   <features>
diff --git a/tests/domaincapsdata/qemu_6.0.0.x86_64.xml b/tests/domaincapsdata/qemu_6.0.0.x86_64.xml
index a6fa374211..eb60a2105f 100644
--- a/tests/domaincapsdata/qemu_6.0.0.x86_64.xml
+++ b/tests/domaincapsdata/qemu_6.0.0.x86_64.xml
@@ -216,6 +216,10 @@
         <value>passthrough</value>
         <value>emulator</value>
       </enum>
+      <enum name='backendVersion'>
+        <value>1.2</value>
+        <value>2.0</value>
+      </enum>
     </tpm>
   </devices>
   <features>
diff --git a/tests/domaincapsdata/qemu_6.1.0-q35.x86_64.xml b/tests/domaincapsdata/qemu_6.1.0-q35.x86_64.xml
index f4d0fcf673..0480a086c6 100644
--- a/tests/domaincapsdata/qemu_6.1.0-q35.x86_64.xml
+++ b/tests/domaincapsdata/qemu_6.1.0-q35.x86_64.xml
@@ -217,6 +217,10 @@
         <value>passthrough</value>
         <value>emulator</value>
       </enum>
+      <enum name='backendVersion'>
+        <value>1.2</value>
+        <value>2.0</value>
+      </enum>
     </tpm>
   </devices>
   <features>
diff --git a/tests/domaincapsdata/qemu_6.1.0-tcg.x86_64.xml b/tests/domaincapsdata/qemu_6.1.0-tcg.x86_64.xml
index 40bc875e3c..7baecb0c73 100644
--- a/tests/domaincapsdata/qemu_6.1.0-tcg.x86_64.xml
+++ b/tests/domaincapsdata/qemu_6.1.0-tcg.x86_64.xml
@@ -230,6 +230,10 @@
         <value>passthrough</value>
         <value>emulator</value>
       </enum>
+      <enum name='backendVersion'>
+        <value>1.2</value>
+        <value>2.0</value>
+      </enum>
     </tpm>
   </devices>
   <features>
diff --git a/tests/domaincapsdata/qemu_6.1.0.x86_64.xml b/tests/domaincapsdata/qemu_6.1.0.x86_64.xml
index 67fc449f5d..9cbe93ad46 100644
--- a/tests/domaincapsdata/qemu_6.1.0.x86_64.xml
+++ b/tests/domaincapsdata/qemu_6.1.0.x86_64.xml
@@ -217,6 +217,10 @@
         <value>passthrough</value>
         <value>emulator</value>
       </enum>
+      <enum name='backendVersion'>
+        <value>1.2</value>
+        <value>2.0</value>
+      </enum>
     </tpm>
   </devices>
   <features>
diff --git a/tests/domaincapsdata/qemu_6.2.0-q35.x86_64.xml b/tests/domaincapsdata/qemu_6.2.0-q35.x86_64.xml
index 9d68c0a404..07b951b81f 100644
--- a/tests/domaincapsdata/qemu_6.2.0-q35.x86_64.xml
+++ b/tests/domaincapsdata/qemu_6.2.0-q35.x86_64.xml
@@ -217,6 +217,10 @@
         <value>passthrough</value>
         <value>emulator</value>
       </enum>
+      <enum name='backendVersion'>
+        <value>1.2</value>
+        <value>2.0</value>
+      </enum>
     </tpm>
   </devices>
   <features>
diff --git a/tests/domaincapsdata/qemu_6.2.0-tcg.x86_64.xml b/tests/domaincapsdata/qemu_6.2.0-tcg.x86_64.xml
index a439dda190..367e656b31 100644
--- a/tests/domaincapsdata/qemu_6.2.0-tcg.x86_64.xml
+++ b/tests/domaincapsdata/qemu_6.2.0-tcg.x86_64.xml
@@ -231,6 +231,10 @@
         <value>passthrough</value>
         <value>emulator</value>
       </enum>
+      <enum name='backendVersion'>
+        <value>1.2</value>
+        <value>2.0</value>
+      </enum>
     </tpm>
   </devices>
   <features>
diff --git a/tests/domaincapsdata/qemu_6.2.0-virt.aarch64.xml b/tests/domaincapsdata/qemu_6.2.0-virt.aarch64.xml
index f6045623f5..99c0fc03fd 100644
--- a/tests/domaincapsdata/qemu_6.2.0-virt.aarch64.xml
+++ b/tests/domaincapsdata/qemu_6.2.0-virt.aarch64.xml
@@ -176,6 +176,10 @@
         <value>passthrough</value>
         <value>emulator</value>
       </enum>
+      <enum name='backendVersion'>
+        <value>1.2</value>
+        <value>2.0</value>
+      </enum>
     </tpm>
   </devices>
   <features>
diff --git a/tests/domaincapsdata/qemu_6.2.0.aarch64.xml b/tests/domaincapsdata/qemu_6.2.0.aarch64.xml
index 35e18adcd5..8e04508694 100644
--- a/tests/domaincapsdata/qemu_6.2.0.aarch64.xml
+++ b/tests/domaincapsdata/qemu_6.2.0.aarch64.xml
@@ -174,6 +174,10 @@
         <value>passthrough</value>
         <value>emulator</value>
       </enum>
+      <enum name='backendVersion'>
+        <value>1.2</value>
+        <value>2.0</value>
+      </enum>
     </tpm>
   </devices>
   <features>
diff --git a/tests/domaincapsdata/qemu_6.2.0.ppc64.xml b/tests/domaincapsdata/qemu_6.2.0.ppc64.xml
index b07072778b..0bbe501383 100644
--- a/tests/domaincapsdata/qemu_6.2.0.ppc64.xml
+++ b/tests/domaincapsdata/qemu_6.2.0.ppc64.xml
@@ -136,6 +136,10 @@
         <value>passthrough</value>
         <value>emulator</value>
       </enum>
+      <enum name='backendVersion'>
+        <value>1.2</value>
+        <value>2.0</value>
+      </enum>
     </tpm>
   </devices>
   <features>
diff --git a/tests/domaincapsdata/qemu_6.2.0.x86_64.xml b/tests/domaincapsdata/qemu_6.2.0.x86_64.xml
index 0f89790b60..f363cf1b79 100644
--- a/tests/domaincapsdata/qemu_6.2.0.x86_64.xml
+++ b/tests/domaincapsdata/qemu_6.2.0.x86_64.xml
@@ -217,6 +217,10 @@
         <value>passthrough</value>
         <value>emulator</value>
       </enum>
+      <enum name='backendVersion'>
+        <value>1.2</value>
+        <value>2.0</value>
+      </enum>
     </tpm>
   </devices>
   <features>
diff --git a/tests/domaincapsdata/qemu_7.0.0-q35.x86_64.xml b/tests/domaincapsdata/qemu_7.0.0-q35.x86_64.xml
index 4e6ff06125..136dadaeb4 100644
--- a/tests/domaincapsdata/qemu_7.0.0-q35.x86_64.xml
+++ b/tests/domaincapsdata/qemu_7.0.0-q35.x86_64.xml
@@ -219,6 +219,9 @@
         <value>passthrough</value>
         <value>emulator</value>
       </enum>
+      <enum name='backendVersion'>
+        <value>2.0</value>
+      </enum>
     </tpm>
   </devices>
   <features>
diff --git a/tests/domaincapsdata/qemu_7.0.0-tcg.x86_64.xml b/tests/domaincapsdata/qemu_7.0.0-tcg.x86_64.xml
index ed80a7892f..c684759356 100644
--- a/tests/domaincapsdata/qemu_7.0.0-tcg.x86_64.xml
+++ b/tests/domaincapsdata/qemu_7.0.0-tcg.x86_64.xml
@@ -233,6 +233,9 @@
         <value>passthrough</value>
         <value>emulator</value>
       </enum>
+      <enum name='backendVersion'>
+        <value>2.0</value>
+      </enum>
     </tpm>
   </devices>
   <features>
diff --git a/tests/domaincapsdata/qemu_7.0.0-virt.aarch64.xml b/tests/domaincapsdata/qemu_7.0.0-virt.aarch64.xml
index 7a8cb9f113..1d6f29db9f 100644
--- a/tests/domaincapsdata/qemu_7.0.0-virt.aarch64.xml
+++ b/tests/domaincapsdata/qemu_7.0.0-virt.aarch64.xml
@@ -176,6 +176,9 @@
         <value>passthrough</value>
         <value>emulator</value>
       </enum>
+      <enum name='backendVersion'>
+        <value>2.0</value>
+      </enum>
     </tpm>
   </devices>
   <features>
diff --git a/tests/domaincapsdata/qemu_7.0.0.aarch64.xml b/tests/domaincapsdata/qemu_7.0.0.aarch64.xml
index d48c87dc3a..73097470f8 100644
--- a/tests/domaincapsdata/qemu_7.0.0.aarch64.xml
+++ b/tests/domaincapsdata/qemu_7.0.0.aarch64.xml
@@ -174,6 +174,9 @@
         <value>passthrough</value>
         <value>emulator</value>
       </enum>
+      <enum name='backendVersion'>
+        <value>2.0</value>
+      </enum>
     </tpm>
   </devices>
   <features>
diff --git a/tests/domaincapsdata/qemu_7.0.0.ppc64.xml b/tests/domaincapsdata/qemu_7.0.0.ppc64.xml
index ec171bcdd9..7765c941c5 100644
--- a/tests/domaincapsdata/qemu_7.0.0.ppc64.xml
+++ b/tests/domaincapsdata/qemu_7.0.0.ppc64.xml
@@ -138,6 +138,9 @@
         <value>passthrough</value>
         <value>emulator</value>
       </enum>
+      <enum name='backendVersion'>
+        <value>2.0</value>
+      </enum>
     </tpm>
   </devices>
   <features>
diff --git a/tests/domaincapsdata/qemu_7.0.0.x86_64.xml b/tests/domaincapsdata/qemu_7.0.0.x86_64.xml
index a20395c6d4..0f9a65ef1b 100644
--- a/tests/domaincapsdata/qemu_7.0.0.x86_64.xml
+++ b/tests/domaincapsdata/qemu_7.0.0.x86_64.xml
@@ -219,6 +219,9 @@
         <value>passthrough</value>
         <value>emulator</value>
       </enum>
+      <enum name='backendVersion'>
+        <value>2.0</value>
+      </enum>
     </tpm>
   </devices>
   <features>
diff --git a/tests/domaincapsdata/qemu_7.1.0-q35.x86_64.xml b/tests/domaincapsdata/qemu_7.1.0-q35.x86_64.xml
index 4e96c5104a..30082712f4 100644
--- a/tests/domaincapsdata/qemu_7.1.0-q35.x86_64.xml
+++ b/tests/domaincapsdata/qemu_7.1.0-q35.x86_64.xml
@@ -218,6 +218,9 @@
         <value>passthrough</value>
         <value>emulator</value>
       </enum>
+      <enum name='backendVersion'>
+        <value>2.0</value>
+      </enum>
     </tpm>
   </devices>
   <features>
diff --git a/tests/domaincapsdata/qemu_7.1.0-tcg.x86_64.xml b/tests/domaincapsdata/qemu_7.1.0-tcg.x86_64.xml
index 46542c8b5b..bcca02f0a4 100644
--- a/tests/domaincapsdata/qemu_7.1.0-tcg.x86_64.xml
+++ b/tests/domaincapsdata/qemu_7.1.0-tcg.x86_64.xml
@@ -231,6 +231,9 @@
         <value>passthrough</value>
         <value>emulator</value>
       </enum>
+      <enum name='backendVersion'>
+        <value>2.0</value>
+      </enum>
     </tpm>
   </devices>
   <features>
diff --git a/tests/domaincapsdata/qemu_7.1.0.x86_64.xml b/tests/domaincapsdata/qemu_7.1.0.x86_64.xml
index 02b43e318f..f377b8e3a9 100644
--- a/tests/domaincapsdata/qemu_7.1.0.x86_64.xml
+++ b/tests/domaincapsdata/qemu_7.1.0.x86_64.xml
@@ -218,6 +218,9 @@
         <value>passthrough</value>
         <value>emulator</value>
       </enum>
+      <enum name='backendVersion'>
+        <value>2.0</value>
+      </enum>
     </tpm>
   </devices>
   <features>
diff --git a/tests/domaincapstest.c b/tests/domaincapstest.c
index 3b8216a8f6..b4cb1894c2 100644
--- a/tests/domaincapstest.c
+++ b/tests/domaincapstest.c
@@ -252,6 +252,7 @@ doTestQemuInternal(const char *version,
     g_autofree char *name = NULL;
     g_autofree char *capsName = NULL;
     g_autofree char *emulator = NULL;
+    int rc;
 
     name = g_strdup_printf("qemu_%s%s%s%s.%s",
                            version,
@@ -274,7 +275,21 @@ doTestQemuInternal(const char *version,
     };
     VIR_WARNINGS_RESET
 
-    if (virTestRun(name, test_virDomainCapsFormat, &data) < 0)
+    if (STRPREFIX(version, "3.") ||
+        STRPREFIX(version, "4.") ||
+        STRPREFIX(version, "5.")) {
+        g_setenv(TEST_TPM_ENV_VAR, TPM_VER_1_2, true);
+    } else if (STRPREFIX(version, "6.")) {
+        g_setenv(TEST_TPM_ENV_VAR, TPM_VER_1_2 TPM_VER_2_0, true);
+    } else {
+        g_setenv(TEST_TPM_ENV_VAR, TPM_VER_2_0, true);
+    }
+
+    rc = virTestRun(name, test_virDomainCapsFormat, &data);
+
+    g_unsetenv(TEST_TPM_ENV_VAR);
+
+    if (rc < 0)
         return -1;
 
     return 0;
diff --git a/tests/testutilsqemu.c b/tests/testutilsqemu.c
index 00dd9871d1..6d3decdc16 100644
--- a/tests/testutilsqemu.c
+++ b/tests/testutilsqemu.c
@@ -146,16 +146,25 @@ bool virTPMHasSwtpm(void)
 }
 
 
+
 bool
 virTPMSwtpmSetupCapsGet(virTPMSwtpmSetupFeature cap)
 {
+    const char *tpmver = getenv(TEST_TPM_ENV_VAR);
+
     switch (cap) {
+    case VIR_TPM_SWTPM_SETUP_FEATURE_TPM_1_2:
+        if (!tpmver || (tpmver && strstr(tpmver, TPM_VER_1_2)))
+            return true;
+        break;
+    case VIR_TPM_SWTPM_SETUP_FEATURE_TPM_2_0:
+        if (!tpmver || (tpmver && strstr(tpmver, TPM_VER_2_0)))
+            return true;
+        break;
     case VIR_TPM_SWTPM_SETUP_FEATURE_CMDARG_PWDFILE_FD:
     case VIR_TPM_SWTPM_SETUP_FEATURE_CMDARG_CREATE_CONFIG_FILES:
     case VIR_TPM_SWTPM_SETUP_FEATURE_TPM12_NOT_NEED_ROOT:
     case VIR_TPM_SWTPM_SETUP_FEATURE_CMDARG_RECONFIGURE_PCR_BANKS:
-    case VIR_TPM_SWTPM_SETUP_FEATURE_TPM_1_2:
-    case VIR_TPM_SWTPM_SETUP_FEATURE_TPM_2_0:
     case VIR_TPM_SWTPM_SETUP_FEATURE_LAST:
         break;
     }
diff --git a/tests/testutilsqemu.h b/tests/testutilsqemu.h
index 7ce4c4ad8d..943958d02a 100644
--- a/tests/testutilsqemu.h
+++ b/tests/testutilsqemu.h
@@ -25,6 +25,9 @@
 # include "qemu/qemu_conf.h"
 
 # define TEST_QEMU_CAPS_PATH abs_srcdir "/qemucapabilitiesdata"
+# define TEST_TPM_ENV_VAR "VIR_TEST_MOCK_FAKE_TPM_VERSION"
+# define TPM_VER_1_2 "1.2"
+# define TPM_VER_2_0 "2.0"
 
 enum {
     GIC_NONE = 0,