diff --git a/charts/atlas-operator-crds/Chart.yaml b/charts/atlas-operator-crds/Chart.yaml
index f38cec84..148f921b 100644
--- a/charts/atlas-operator-crds/Chart.yaml
+++ b/charts/atlas-operator-crds/Chart.yaml
@@ -2,8 +2,8 @@ apiVersion: v2
 name: mongodb-atlas-operator-crds
 description: MongoDB Atlas Operator CRDs - Helm chart for installing and upgrading Custom Resource Definitions (CRDs) for the Atlas Operator.
 type: application
-version: 2.3.0
-appVersion: 2.3.0
+version: 2.3.1
+appVersion: 2.3.1
 kubeVersion: ">=1.15.0-0"
 keywords:
   - mongodb
diff --git a/charts/atlas-operator-crds/templates/atlas.mongodb.com_atlasdatabaseusers.yaml b/charts/atlas-operator-crds/templates/atlas.mongodb.com_atlasdatabaseusers.yaml
index cd1860ae..156b06b4 100644
--- a/charts/atlas-operator-crds/templates/atlas.mongodb.com_atlasdatabaseusers.yaml
+++ b/charts/atlas-operator-crds/templates/atlas.mongodb.com_atlasdatabaseusers.yaml
@@ -185,8 +185,13 @@ spec:
                 maxLength: 1024
                 type: string
               x509Type:
+                default: NONE
                 description: X509Type is X.509 method by which the database authenticates
                   the provided username
+                enum:
+                - NONE
+                - MANAGED
+                - CUSTOMER
                 type: string
             required:
             - projectRef
diff --git a/charts/atlas-operator/Chart.yaml b/charts/atlas-operator/Chart.yaml
index b0b39d36..c1a0f443 100644
--- a/charts/atlas-operator/Chart.yaml
+++ b/charts/atlas-operator/Chart.yaml
@@ -3,8 +3,8 @@ name: mongodb-atlas-operator
 description: |-
   MongoDB Atlas Operator - a Helm chart for installing and upgrading Atlas Operator: the official Kubernetes operator allowing to manage MongoDB Atlas resources from Kubernetes
 type: application
-version: 2.3.0
-appVersion: 2.3.0
+version: 2.3.1
+appVersion: 2.3.1
 kubeVersion: ">=1.15.0-0"
 keywords:
   - mongodb
@@ -19,6 +19,6 @@ maintainers:
     email: support@mongodb.com
 dependencies:
   - name: mongodb-atlas-operator-crds
-    version: "2.3.0"
+    version: "2.3.1"
     repository: "https://mongodb.github.io/helm-charts"
     condition: mongodb-atlas-operator-crds.enabled