diff --git a/charts/postgres-operator/crds/postgresqls.yaml b/charts/postgres-operator/crds/postgresqls.yaml
index 0d444e568..0f7ec7067 100644
--- a/charts/postgres-operator/crds/postgresqls.yaml
+++ b/charts/postgres-operator/crds/postgresqls.yaml
@@ -122,10 +122,9 @@ spec:
                   type: string
                 timestamp:
                   type: string
-                  pattern: '^([0-9]+)-(0[1-9]|1[012])-(0[1-9]|[12][0-9]|3[01])[Tt]([01][0-9]|2[0-3]):([0-5][0-9]):([0-5][0-9]|60)(\.[0-9]+)?(([Zz])|([+-]([01][0-9]|2[0-3]):[0-5][0-9]))$'
-                  # The regexp matches the date-time format (RFC 3339 Section 5.6) that specifies a timezone as an offset relative to UTC
-                  # Example: 1996-12-19T16:39:57-08:00
-                  # Note: this field requires a timezone
+                  pattern: '^([0-9]+)-(0[1-9]|1[012])-(0[1-9]|[12][0-9]|3[01])[Tt]([01][0-9]|2[0-3]):([0-5][0-9]):([0-5][0-9]|60)(\.[0-9]+)?.*$'
+                  # The regexp matches the date-time format
+                  # Example: 1996-12-19T16:39:57
                 uid:
                   format: uuid
                   type: string
diff --git a/manifests/postgresql.crd.yaml b/manifests/postgresql.crd.yaml
index 97b72a8ca..c058c67bb 100644
--- a/manifests/postgresql.crd.yaml
+++ b/manifests/postgresql.crd.yaml
@@ -118,10 +118,9 @@ spec:
                   type: string
                 timestamp:
                   type: string
-                  pattern: '^([0-9]+)-(0[1-9]|1[012])-(0[1-9]|[12][0-9]|3[01])[Tt]([01][0-9]|2[0-3]):([0-5][0-9]):([0-5][0-9]|60)(\.[0-9]+)?(([Zz])|([+-]([01][0-9]|2[0-3]):[0-5][0-9]))$'
-                  # The regexp matches the date-time format (RFC 3339 Section 5.6) that specifies a timezone as an offset relative to UTC
-                  # Example: 1996-12-19T16:39:57-08:00
-                  # Note: this field requires a timezone
+                  pattern: '^([0-9]+)-(0[1-9]|1[012])-(0[1-9]|[12][0-9]|3[01])[Tt]([01][0-9]|2[0-3]):([0-5][0-9]):([0-5][0-9]|60)(\.[0-9]+)?.*$'
+                  # The regexp matches the date-time format
+                  # Example: 1996-12-19T16:39:57
                 uid:
                   format: uuid
                   type: string
diff --git a/pkg/apis/acid.zalan.do/v1/crds.go b/pkg/apis/acid.zalan.do/v1/crds.go
index 2cfc28856..461709db8 100644
--- a/pkg/apis/acid.zalan.do/v1/crds.go
+++ b/pkg/apis/acid.zalan.do/v1/crds.go
@@ -169,7 +169,7 @@ var PostgresCRDResourceValidation = apiextv1beta1.CustomResourceValidation{
 							"timestamp": {
 								Type:        "string",
 								Description: "Date-time format that specifies a timezone as an offset relative to UTC e.g. 1996-12-19T16:39:57-08:00",
-								Pattern:     "^([0-9]+)-(0[1-9]|1[012])-(0[1-9]|[12][0-9]|3[01])[Tt]([01][0-9]|2[0-3]):([0-5][0-9]):([0-5][0-9]|60)(\\.[0-9]+)?(([Zz])|([+-]([01][0-9]|2[0-3]):[0-5][0-9]))$",
+								Pattern:     "^([0-9]+)-(0[1-9]|1[012])-(0[1-9]|[12][0-9]|3[01])[Tt]([01][0-9]|2[0-3]):([0-5][0-9]):([0-5][0-9]|60)(\\.[0-9]+)?.*$",
 							},
 							"uid": {
 								Type:   "string",