diff --git a/.prow.sh b/.prow.sh
index 11e1027f..23138ae1 100755
--- a/.prow.sh
+++ b/.prow.sh
@@ -1,5 +1,35 @@
 #! /bin/bash
 export CSI_PROW_E2E_FOCUS_1_34="\[FeatureGate:VolumeAttributesClass\]"
+
+custom_post_install() {
+    echo "!!!! Running custom post install hook... !!!!!!!!!!"
+    yq -i '.VolumeAttributesClass = {"FromExistingClassName": "testvac"}' "${CSI_PROW_WORK}/test-driver.yaml"
+    cat "${CSI_PROW_WORK}/test-driver.yaml"
+
+    # Create the VAC Class
+    cat >"${CSI_PROW_WORK}/sample-vac.yaml" <<EOF
+apiVersion: storage.k8s.io/v1
+kind: VolumeAttributesClass
+metadata:
+  name: testvac
+driverName: hostpath.csi.k8s.io
+parameters:
+  e2eVacTest: e2eVacTestValue
+EOF
+    info "!!!!!!!!!! Creating sample VAC class !!!!!!!!!! "
+    cat "${CSI_PROW_WORK}/sample-vac.yaml"
+    kubectl create -f "${CSI_PROW_WORK}/sample-vac.yaml"
+    info "########## Modifying CSI driver to enable VAC ##########"
+    kubectl get statefulsets csi-hostpathplugin  -o json|jq '(.spec.template.spec.containers[] | select(.name == "hostpath").args) += ["-enable-controller-modify-volume", "--accepted-mutable-parameter-names=e2eVacTest"]'|kubectl apply -f -
+
+    info "!!!!!!!!!! Rolling out statefulset !!!!!!!!!!"
+    kubectl rollout restart sts csi-hostpathplugin -n default
+    # Wait for the rollout to complete
+    info "########## Waiting for rollout to complete..."
+    kubectl rollout status sts csi-hostpathplugin -n default
+}
+
+export CSI_PROW_DRIVER_POSTINSTALL="custom_post_install"
 . release-tools/prow.sh
 main