diff --git a/README.md b/README.md
index 5bba23e..694b47d 100644
--- a/README.md
+++ b/README.md
@@ -1,5 +1,5 @@
 [![PSL cataloged](https://img.shields.io/badge/PSL-cataloged-a0a0a0.svg)](https://www.PSLmodels.org)
-[![Python 3.6](https://img.shields.io/badge/python-3.6-blue.svg)](https://www.python.org/downloads/release/python-360/)
+[![Python 3.6+](https://img.shields.io/badge/python-3.6%2B-blue.svg)](https://www.python.org/downloads/release/python-360/)
 [![Build Status](https://travis-ci.org/PSLmodels/Behavioral-Responses.svg?branch=master)](https://travis-ci.org/PSLmodels/Behavioral-Responses)
 [![Codecov](https://codecov.io/gh/PSLmodels/Behavioral-Responses/branch/master/graph/badge.svg)](https://codecov.io/gh/PSLmodels/Behavioral-Responses)
 
diff --git a/RELEASES.md b/RELEASES.md
index 3dcd664..e9499de 100644
--- a/RELEASES.md
+++ b/RELEASES.md
@@ -4,6 +4,23 @@ Go [here](https://github.com/PSLmodels/Behavioral-Responses/pulls?q=is%3Apr+is%3
 for a complete commit history.
 
 
+2018-12-14 Release 0.5.0
+------------------------
+(last merged pull request is
+[#35](https://github.com/PSLmodels/Behavioral-Responses/pull/35))
+
+**API Changes**
+- None
+
+**New Features**
+- Make behresp packages available for Python 3.7 as well as for Python 3.6
+  [[#35](https://github.com/PSLmodels/Behavioral-Responses/pull/35)
+  by Martin Holmer]
+
+**Bug Fixes**
+- None
+
+
 2018-12-13 Release 0.4.1
 ------------------------
 (last merged pull request is