diff --git a/README.md b/README.md
index b3006e0..bbeb348 100644
--- a/README.md
+++ b/README.md
@@ -19,3 +19,5 @@ chargebee-apps run <app_dir>
 ```
 
 5. Open `http://localhost:15000` and trigger events using the provided `test_data`.
+
+`manifest.json` includes an `engines` object. `chargebee-apps create` and `chargebee-apps package` overwrite `engines.node` and `engines.chargebee_apps` with the Node.js and CLI versions on your machine. Do not edit those keys by hand.
diff --git a/sample-apps/sample-apps-with-iparams/crm_lead_on_customer_created_sample_app/manifest.json b/sample-apps/sample-apps-with-iparams/crm_lead_on_customer_created_sample_app/manifest.json
index a58f2c9..6e54fd9 100644
--- a/sample-apps/sample-apps-with-iparams/crm_lead_on_customer_created_sample_app/manifest.json
+++ b/sample-apps/sample-apps-with-iparams/crm_lead_on_customer_created_sample_app/manifest.json
@@ -3,5 +3,9 @@
 		"customer_created": {
 			"handler": "customerCreatedHandler"
 		}
+	},
+	"engines": {
+		"node": "22.11.0",
+		"chargebee_apps": "1.1.1"
 	}
 }
diff --git a/sample-apps/sample-apps-with-iparams/schedule_advance_invoice_sample_app/manifest.json b/sample-apps/sample-apps-with-iparams/schedule_advance_invoice_sample_app/manifest.json
index 162ff76..3e07b34 100644
--- a/sample-apps/sample-apps-with-iparams/schedule_advance_invoice_sample_app/manifest.json
+++ b/sample-apps/sample-apps-with-iparams/schedule_advance_invoice_sample_app/manifest.json
@@ -6,5 +6,9 @@
 		"subscription_created": {
 			"handler": "subscriptionCreatedHandler"
 		}
+	},
+	"engines": {
+		"node": "22.11.0",
+		"chargebee_apps": "1.1.1"
 	}
 }
diff --git a/sample-apps/sample-apps-without-iparams/dunning_cycle_end_handler_sample_app/manifest.json b/sample-apps/sample-apps-without-iparams/dunning_cycle_end_handler_sample_app/manifest.json
index 0568c54..e6651f8 100644
--- a/sample-apps/sample-apps-without-iparams/dunning_cycle_end_handler_sample_app/manifest.json
+++ b/sample-apps/sample-apps-without-iparams/dunning_cycle_end_handler_sample_app/manifest.json
@@ -6,5 +6,9 @@
 		"invoice_updated": {
 			"handler": "invoiceUpdatedHandler"
 		}
+	},
+	"engines": {
+		"node": "22.11.0",
+		"chargebee_apps": "1.1.1"
 	}
 }