diff --git a/charts/alertmanager/values.schema.json b/charts/alertmanager/values.schema.json
index aa030c5917e7..8770a294683e 100644
--- a/charts/alertmanager/values.schema.json
+++ b/charts/alertmanager/values.schema.json
@@ -782,12 +782,20 @@
                 "podManagementPolicy": {
                   "type": "string"
                 },
-                "pvcDeleteOnStsDelete": {
-                  "type": "boolean"
-                },
-                "pvcDeleteOnStsScale": {
-                  "type": "boolean"
-                }
+                "persistentVolumeClaimRetentionPolicy": {
+                    "type": "object",
+                    "properties": {
+                      "whenDeleted": {
+                        "type": "string",
+                        "enum": ["Retain", "Delete"]
+                      },
+                      "whenScaled": {
+                        "type": "string",
+                        "enum": ["Retain", "Delete"]
+                      }
+                    },
+                    "additionalProperties": false,
+                    "required": ["whenDeleted", "whenScaled"]
               }
             }
         },
@@ -953,3 +961,4 @@
             }
         }
     }
+}
\ No newline at end of file