diff --git a/manifests/postgresql.crd.yaml b/manifests/postgresql.crd.yaml
index 92aada54e..77700097a 100644
--- a/manifests/postgresql.crd.yaml
+++ b/manifests/postgresql.crd.yaml
@@ -4062,7 +4062,17 @@ spec:
                 nullable: true
                 items:
                   type: object
-                  x-kubernetes-preserve-unknown-fields: true
+                  properties:
+                    maxSkew:
+                      type: integer
+                      format: int32
+                    topologyKey:
+                      type: string
+                    whenUnsatisfiable:
+                      type: string
+                      enum:
+                        - DoNotSchedule
+                        - ScheduleAnyway
               useLoadBalancer:
                 description: |-
                   deprecated load balancer settings maintained for backward compatibility
diff --git a/pkg/apis/acid.zalan.do/v1/crds.go b/pkg/apis/acid.zalan.do/v1/crds.go
index 1ab85c905..7f536a006 100644
--- a/pkg/apis/acid.zalan.do/v1/crds.go
+++ b/pkg/apis/acid.zalan.do/v1/crds.go
@@ -56,6 +56,7 @@ var OperatorConfigCRDResourceColumns = []apiextv1.CustomResourceColumnDefinition
 }
 
 var min1 = 1.0
+var minLength1 int64 = 1
 var minDisable = -1.0
 
 // OperatorConfigCRDResourceValidation to check applied manifest parameters