diff --git a/CHANGELOG.md b/CHANGELOG.md
index 2a8e04f..b1d34ef 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,6 +5,9 @@ This project adheres to [Semantic Versioning](http://semver.org/).
 ## Unreleased
 - [Compare to latest release][unreleased]
 
+## [1.3.8] - 2021-04-09
+- [#214](https://github.com/SparkPost/python-sparkpost/pull/214) Support for AMP HTML for transmissions
+
 ## [1.3.7] - 2021-03-24
 - [#211](https://github.com/SparkPost/python-sparkpost/pull/211) Support for top open pixel for transmissions
 
diff --git a/setup.py b/setup.py
index 3b1d209..ef32612 100644
--- a/setup.py
+++ b/setup.py
@@ -6,7 +6,7 @@
 
 setup(
     name='sparkpost',
-    version='1.3.7',
+    version='1.3.8',
     author='SparkPost',
     author_email='developers@sparkpost.com',
     packages=find_packages(),
diff --git a/sparkpost/__init__.py b/sparkpost/__init__.py
index 9cd1f24..8c29f4e 100644
--- a/sparkpost/__init__.py
+++ b/sparkpost/__init__.py
@@ -9,7 +9,7 @@
 from .transmissions import Transmissions
 
 
-__version__ = '1.3.7'
+__version__ = '1.3.8'
 
 EU_API = 'api.eu.sparkpost.com'
 US_API = 'api.sparkpost.com'
diff --git a/sparkpost/transmissions.py b/sparkpost/transmissions.py
index a3f292c..934c2ec 100644
--- a/sparkpost/transmissions.py
+++ b/sparkpost/transmissions.py
@@ -32,6 +32,7 @@
     'subject': 'content/subject',
     'from_email': 'content/from',
     'html': 'content/html',
+    'amp_html': 'content/amp_html',
     'text': 'content/text',
     'template': 'content/template_id',
     'attachments': 'content/attachments',
@@ -201,6 +202,7 @@ def send(self, **kwargs):
         :param bool use_draft_template: Defaults to False. Set to true if you
             want to send a template that is a draft
         :param str html: HTML part of transmission
+        :param str amp_html: AMP HTML part of the transmission
         :param str text: Text part of transmission
         :param str subject: Subject of transmission
         :param str from_email: Email that the transmission comes from. The