diff --git a/CHANGELOG.md b/CHANGELOG.md
index 912d64a..983146a 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -3,9 +3,13 @@
 # Master
 
 - Bugfix: Pipenv no longer installs twice in CI
-- Python 2.7.17 now available on Heroku 18 and 16.
 
 --------------------------------------------------------------------------------
+
+# 159 (2019-10-22)
+
+- Python 2.7.17 now available on Heroku 18 and 16.
+
 # 158 (2019-10-21)
 
 - Python 3.7.5 and 3.8.0 now available on Heroku 18 and 16.
diff --git a/README.md b/README.md
index ad7a654..e3ea62a 100644
--- a/README.md
+++ b/README.md
@@ -63,7 +63,7 @@ Supported runtime options include:
 
 - `python-3.7.4`
 - `python-3.6.9`
-- `python-2.7.16`
+- `python-2.7.17`
 
 ## Tests