diff --git a/lib/smart_city/dataset.ex b/lib/smart_city/dataset.ex
index 25dd090..3830e10 100644
--- a/lib/smart_city/dataset.ex
+++ b/lib/smart_city/dataset.ex
@@ -41,7 +41,7 @@ defmodule SmartCity.Dataset do
         }
       ],
       "sourceUrl": "",
-      "protocol": "", //defaults to nil. Can be HTTP1 or HTTP2
+      "protocol": "",       // List of protocols to use. Defaults to nil. Can be [http1, http2]
       "authUrl": "",
       "sourceFormat": "",
       "sourceType": "",     // remote|stream|batch
diff --git a/lib/smart_city/dataset/technical.ex b/lib/smart_city/dataset/technical.ex
index fc9b3e5..23f4aaf 100644
--- a/lib/smart_city/dataset/technical.ex
+++ b/lib/smart_city/dataset/technical.ex
@@ -22,7 +22,7 @@ defmodule SmartCity.Dataset.Technical do
           validations: not_required(list()),
           sourceHeaders: not_required(map()),
           authHeaders: not_required(map()),
-          protocol: not_required(String.t()),
+          protocol: not_required(list(String.t())),
           partitioner: not_required(%{type: String.t(), query: String.t()}),
           private: not_required(boolean())
         }
diff --git a/mix.exs b/mix.exs
index 6844cbd..2a2d865 100644
--- a/mix.exs
+++ b/mix.exs
@@ -4,7 +4,7 @@ defmodule SmartCity.Registry.MixProject do
   def project do
     [
       app: :smart_city_registry,
-      version: "3.1.0",
+      version: "3.2.0",
       elixir: "~> 1.8",
       start_permanent: Mix.env() == :prod,
       deps: deps(),