From a52948e88ed60597407a285ed83e5d9dd5af5250 Mon Sep 17 00:00:00 2001
From: Carlton Gibson <carlton@noumenal.es>
Date: Fri, 5 Jun 2020 10:56:18 +0200
Subject: [PATCH] Updated DEFAULT_PROTOCOL to 3.
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> Protocol version 3 was added in Python 3.0. It has explicit support for bytes objects and cannot be unpickled by Python 2.x. This was the default protocol in Python 3.0–3.7.
---
 README.rst               | 2 ++
 picklefield/constants.py | 2 +-
 2 files changed, 3 insertions(+), 1 deletion(-)

diff --git a/README.rst b/README.rst
index 577c39e..a824013 100644
--- a/README.rst
+++ b/README.rst
@@ -166,6 +166,8 @@ UNRELEASED
 ==========
 
 * Dropped support for Python 2.
+* Updated default pickle protocol to version 3.
+
 Changes in version 2.1.0
 ========================
 
diff --git a/picklefield/constants.py b/picklefield/constants.py
index d3c1743..e8232d2 100644
--- a/picklefield/constants.py
+++ b/picklefield/constants.py
@@ -1,3 +1,3 @@
 from __future__ import unicode_literals
 
-DEFAULT_PROTOCOL = 2
+DEFAULT_PROTOCOL = 3