diff --git a/CHANGELOG.md b/CHANGELOG.md
index 36cdb59..7da1fc6 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,9 @@
 # Python Buildpack Changelog
 
+# 129
+
+Don't upgrade pip.
+
 # 128
 
 Upgrade pip, pin to Pipenv v11.8.2.
diff --git a/bin/compile b/bin/compile
index adfff6e..724e1e5 100755
--- a/bin/compile
+++ b/bin/compile
@@ -45,7 +45,7 @@ LATEST_3="python-3.6.4"
 LATEST_2="python-2.7.14"
 
 DEFAULT_PYTHON_STACK="cedar-14"
-PIP_UPDATE="9.0.2"
+PIP_UPDATE="9.0.1"
 
 export DEFAULT_PYTHON_VERSION DEFAULT_PYTHON_STACK PIP_UPDATE LATEST_2 LATEST_3