diff --git a/CHANGELOG.md b/CHANGELOG.md
index d0312e2..6b412b8 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,9 @@
 # Changelog
 
+## v1.5.6
+
+- Bug Fix: [Handle invalid batch request structure](https://github.com/absinthe-graphql/absinthe_plug/pull/255)
+
 ## v1.5.5
 
 - Bug Fix: [Don't wipe out an existing pubsub value in context](https://github.com/absinthe-graphql/absinthe_plug/pull/249)
diff --git a/lib/absinthe/plug/request.ex b/lib/absinthe/plug/request.ex
index ec4bed0..c735ebf 100644
--- a/lib/absinthe/plug/request.ex
+++ b/lib/absinthe/plug/request.ex
@@ -56,6 +56,7 @@ defmodule Absinthe.Plug.Request do
   # Plug puts parsed params under the "_json" key when the
   # structure is not a map; otherwise it's just the keys themselves,
   # and they may sit in the body or in the params
+
   defp is_batch?(params) do
     Map.has_key?(params, "_json") && is_list(params["_json"])
   end
diff --git a/mix.exs b/mix.exs
index 03d5861..6e0a108 100644
--- a/mix.exs
+++ b/mix.exs
@@ -1,7 +1,7 @@
 defmodule Absinthe.Plug.Mixfile do
   use Mix.Project
 
-  @version "1.5.5"
+  @version "1.5.6"
 
   def project do
     [