diff --git a/specification/0001-multifold.instance.json.md b/specification/0001-multifold.instance.json.md
index cd88363..35b7569 100644
--- a/specification/0001-multifold.instance.json.md
+++ b/specification/0001-multifold.instance.json.md
@@ -15,9 +15,9 @@ The following is the schema for instance metadata. The primary format is JSON, h
formats, such as YAML.
-apiVersion: string
+version: number
-Represents the API version being used. Current supported API versions: `v1alpha1`.
+Represents the API version being used. Current supported API version: `1`.