diff --git a/CHANGELOG.md b/CHANGELOG.md
index a6bd02d..25519c1 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,9 @@
 # Python Buildpack Changelog
 
+# 154 (2019-07-17)
+
+Fix python 3.5.7 formula actually building 3.7.2
+
 # 153 (2019-06-21)
 
 Hotfix for broken heroku-16 deploys
diff --git a/builds/runtimes/python-3.5.7 b/builds/runtimes/python-3.5.7
index 4d74b89..2a07209 100755
--- a/builds/runtimes/python-3.5.7
+++ b/builds/runtimes/python-3.5.7
@@ -13,9 +13,9 @@ echo "Setting up SQLite3 Headers for $SQLITE3_VERSION"
 sqlite3_install "$OUT_PREFIX" "$SQLITE3_VERSION" 1
 
 echo "Building Python…"
-SOURCE_TARBALL='https://python.org/ftp/python/3.7.2/Python-3.7.2.tgz'
+SOURCE_TARBALL='https://python.org/ftp/python/3.5.7/Python-3.5.7.tgz'
 curl -L $SOURCE_TARBALL | tar xz
-mv Python-3.7.2 src
+mv Python-3.5.7 src
 cd src
 
 ./configure --prefix=$OUT_PREFIX --with-ensurepip=no