diff --git a/helm/cas-postgres-cluster/Chart.yaml b/helm/cas-postgres-cluster/Chart.yaml
index 25ef626..9df37b7 100644
--- a/helm/cas-postgres-cluster/Chart.yaml
+++ b/helm/cas-postgres-cluster/Chart.yaml
@@ -7,12 +7,12 @@ description: |-
 
 type: application
 
-version: 1.1.3
+version: 1.2.0
 
 # Postgres Operator version for which this chart has been built.
 # It will very likely work for later versions, in which case the list of compatible images will change.
 # For the full list of compatible postgres/pgbouncer/pgbackrest versions, see https://access.crunchydata.com/documentation/postgres-operator/latest/references/components
-appVersion: "5.3.1"
+appVersion: "5.7.0"
 
 dependencies:
   - name: terraform-bucket-provision
diff --git a/helm/cas-postgres-cluster/templates/PostgresCluster.yaml b/helm/cas-postgres-cluster/templates/PostgresCluster.yaml
index 90630ab..125a20f 100644
--- a/helm/cas-postgres-cluster/templates/PostgresCluster.yaml
+++ b/helm/cas-postgres-cluster/templates/PostgresCluster.yaml
@@ -103,23 +103,11 @@ spec:
             incremental: "0 0,4,12,16,20 * * *"
       # this stuff is for the "pgbackrest" container (the only non-init container) in the "obps-postgres-repo-host" pod
       repoHost:
-        resources:
-          requests:
-            cpu: 50m
-            memory: 64Mi
-          limits:
-            cpu: 100m
-            memory: 128Mi
+        resources: {{ toYaml .Values.postgresCluster.repoHost.resources | nindent 10 }}
       sidecars:
         # this stuff is for the "pgbackrest" container in the "obps-postgres-pgha1" set of pods
         pgbackrest:
-          resources:
-            requests:
-              cpu: 50m
-              memory: 64Mi
-            limits:
-              cpu: 100m
-              memory: 128Mi
+          resources: {{ toYaml .Values.postgresCluster.pgbackrest.resources | nindent 12 }}
       # allows the triggering of manual backups
       manual:
         repoName: repo1
diff --git a/helm/cas-postgres-cluster/values.schema.json b/helm/cas-postgres-cluster/values.schema.json
new file mode 100644
index 0000000..2421135
--- /dev/null
+++ b/helm/cas-postgres-cluster/values.schema.json
@@ -0,0 +1,16 @@
+{
+  "$schema": "http://json-schema.org/draft-07/schema",
+  "required": ["postgresCluster"],
+  "properties": {
+    "postgresCluster": {
+      "type": "object",
+      "required": ["postgresVersion"],
+      "properties": {
+        "postgresVersion": {
+          "type": "number",
+          "minimum": 17
+        }
+      }
+    }
+  }
+}
diff --git a/helm/cas-postgres-cluster/values.yaml b/helm/cas-postgres-cluster/values.yaml
index a7f3f02..79ef772 100644
--- a/helm/cas-postgres-cluster/values.yaml
+++ b/helm/cas-postgres-cluster/values.yaml
@@ -2,7 +2,7 @@
 environment: ~
 
 postgresCluster:
-  postgresVersion: 14
+  postgresVersion: 17
   storageSize: 1Gi
   resources:
     requests:
@@ -13,16 +13,27 @@ postgresCluster:
       memory: 256Mi
 
   postgres:
-    # image: artifacts.developer.gov.bc.ca/bcgov-docker-local/crunchy-postgres
-    # tag: ubi8-15.7-0
     replicaCount: 2
-  # pgbackrest:
-  #   image: artifacts.developer.gov.bc.ca/bcgov-docker-local/crunchy-pgbackrest
-  #   tag: ubi8-2.41-4
+  pgbackrest:
+    # Resources for the pgbackrest sidecar container
+    resources:
+      requests:
+        cpu: 50m
+        memory: 64Mi
+      limits:
+        cpu: 100m
+        memory: 128Mi
   pgbouncer:
-    # image: artifacts.developer.gov.bc.ca/bcgov-docker-local/crunchy-pgbouncer
-    # tag: ubi8-1.18-0
     replicaCount: 2
+  # Resources for the "obps-postgres-repo-host" pod
+  repoHost:
+    resources:
+      requests:
+        cpu: 50m
+        memory: 64Mi
+      limits:
+        cpu: 100m
+        memory: 128Mi
 
   # The "users" value(s) is passed to the crunchy postgres operator to create the database.
   # See https://access.crunchydata.com/documentation/postgres-operator/latest/tutorials/basic-setup/user-management