diff --git a/schemas/v1/openapi.yaml b/schemas/v1/openapi.yaml
index 2992814..b1c82c8 100644
--- a/schemas/v1/openapi.yaml
+++ b/schemas/v1/openapi.yaml
@@ -51,7 +51,7 @@ paths:
       parameters:
         - name: multihash
           in: path
-          description: The base58 string representation of the multihash.
+          description: The base58 or hex string representation of the multihash.
           required: true
         - $ref: '#/components/parameters/Cascade'
       responses:
@@ -296,4 +296,4 @@ components:
             type: string
 externalDocs:
   description: IPNI Specification
-  url: https://github.com/ipni/specs/blob/main/IPNI.md
\ No newline at end of file
+  url: https://github.com/ipni/specs/blob/main/IPNI.md