diff --git a/config/crd/apiextensions.k8s.io/v1/base/backup.appuio.ch_prebackuppods.yaml b/config/crd/apiextensions.k8s.io/v1/base/backup.appuio.ch_prebackuppods.yaml
index 504887370..c2837cd84 100644
--- a/config/crd/apiextensions.k8s.io/v1/base/backup.appuio.ch_prebackuppods.yaml
+++ b/config/crd/apiextensions.k8s.io/v1/base/backup.appuio.ch_prebackuppods.yaml
@@ -8,7 +8,6 @@ metadata:
   creationTimestamp: null
   name: prebackuppods.backup.appuio.ch
 spec:
-  preserveUnknownFields: false
   group: backup.appuio.ch
   names:
     kind: PreBackupPod
diff --git a/generate.go b/generate.go
index 14add0f8d..bfda85998 100644
--- a/generate.go
+++ b/generate.go
@@ -19,7 +19,7 @@ import (
 	"os"
 )
 
-var patchFiles = []string{"v1beta1/base/backup.appuio.ch_prebackuppods.yaml", "v1/base/backup.appuio.ch_prebackuppods.yaml"}
+var patchFiles = []string{"v1beta1/base/backup.appuio.ch_prebackuppods.yaml"}
 
 // controller-gen 0.3 creates CRDs with apiextensions.k8s.io/v1beta1, but some generated properties aren't valid for that version
 // in K8s 1.18+. We would have to switch to apiextensions.k8s.io/v1, but that would make the CRD incompatible with OpenShift 3.11.