diff --git a/spec/api/api.yaml b/spec/api/api.yaml
index 9f68c8bf2..390a72e8d 100644
--- a/spec/api/api.yaml
+++ b/spec/api/api.yaml
@@ -58,6 +58,9 @@ info:
     * In ResetConfiguration, change the value for the "dataset" key to a url.
     * In UpdateDatabase and VerifyDocuments change the updatedBlobs keys to urls
 
+    1.2.3 (12/09/2025)
+    * Add transport type selection to [/startMultipeerReplicator](#operation/startMultipeerReplicator)
+
     1.2.2 (09/19/2025)
     * Add headers property to ReplicatorConfiguration
 
@@ -880,6 +883,14 @@ paths:
                   $ref: '#/components/schemas/MultipeerReplicatorIdentity'
                 authenticator:
                   $ref: '#/components/schemas/MultipeerReplicatorCAAuthenticator'
+                transports:
+                  type: array
+                  items:
+                    type: string
+                    uniqueItems: true
+                    minItems: 1
+                    enum: ['wifi', 'bluetooth']
+                  example: ['wifi', 'bluetooth']
         required: true
       responses:
         '200':