diff --git a/CHANGELOG.md b/CHANGELOG.md
index a6b98fc129fdbb867600ece2b3dc8a5cf942e229..9fd3c4fcd90bfbf3dbd4e6cf38fdbbd4ed20f8b1 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,9 @@
 # Python Buildpack Changelog
 
+# 127
+
+Pin to Pipenv v11.7.1.
+
 # 126
 
 Bugfixes.