diff --git a/kube/postgres.libsonnet b/kube/postgres.libsonnet
index 2935213..ac29f26 100644
--- a/kube/postgres.libsonnet
+++ b/kube/postgres.libsonnet
@@ -68,15 +68,8 @@
 
     volumeClaim: kube.PersistentVolumeClaim(postgres.makeName("postgres")) {
         metadata+: postgres.metadata,
-        spec+: {
-            storageClassName: cfg.storageClassName,
-            accessModes: [ "ReadWriteOnce" ],
-            resources: {
-                requests: {
-                    storage: cfg.storageSize,
-                },
-            },
-        },
+        storage: cfg.storageSize,
+        storageClass: cfg.storageClassName,
     },
     deployment: kube.Deployment(postgres.makeName("postgres")) {
         metadata+: postgres.metadata,