diff --git a/CHANGELOG.md b/CHANGELOG.md
index 2293998..494a581 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,9 +2,12 @@
 
 # Master
 
+--------------------------------------------------------------------------------
+
+# 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