diff --git a/vertical-pod-autoscaler/hack/vpa-process-yamls.sh b/vertical-pod-autoscaler/hack/vpa-process-yamls.sh
index 6233c735e3a2..b68ebe912ffc 100755
--- a/vertical-pod-autoscaler/hack/vpa-process-yamls.sh
+++ b/vertical-pod-autoscaler/hack/vpa-process-yamls.sh
@@ -63,7 +63,8 @@ fi
 
 for i in $COMPONENTS; do
   if [ $i == admission-controller-deployment ] ; then
-    if [ ${ACTION} == create ] ; then
+    if [[ ${ACTION} == create || ${ACTION} == update ]] ; then
+      # Allow gencerts to fail silently if certs already exist
       (bash ${SCRIPT_ROOT}/pkg/admission-controller/gencerts.sh || true)
     elif [ ${ACTION} == delete ] ; then
       (bash ${SCRIPT_ROOT}/pkg/admission-controller/rmcerts.sh || true)