diff --git a/CHANGELOG.md b/CHANGELOG.md
index 9dee4a8f39d335e7b4810b67b6ec7b741699ff94..845ea9400a2c333705c2366d3de587fa8eb76056 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,8 +1,10 @@
 # Python Buildpack Changelog
 
-# Unreleased
+# 110
 
-Fixed automatic pip uninstall of dependencies removed from requirements.txt.
+Update Default Python to 3.6.1, bugfixes.
+
+- Fixed automatic pip uninstall of dependencies removed from requirements.txt.
 
 # 109
 
diff --git a/bin/compile b/bin/compile
index 6351c244df8e6d95a8216758e2944068b6acdd1c..d17a61c5a4c5806f39400c4c42b978ea69152d03 100755
--- a/bin/compile
+++ b/bin/compile
@@ -32,7 +32,7 @@ CACHE_DIR=$2
 ENV_DIR=$3
 
 # Python defaults
-DEFAULT_PYTHON_VERSION="python-2.7.13"
+DEFAULT_PYTHON_VERSION="python-3.6.1"
 DEFAULT_PYTHON_STACK="cedar-14"
 PYTHON_EXE="/app/.heroku/python/bin/python"
 PIP_VERSION="9.0.1"
diff --git a/test/fixtures/nltk/runtime.txt b/test/fixtures/nltk/runtime.txt
new file mode 100644
index 0000000000000000000000000000000000000000..ba85ab9742df213599b929d6e0ac9b4f408f6c28
--- /dev/null
+++ b/test/fixtures/nltk/runtime.txt
@@ -0,0 +1 @@
+python-2.7.13
\ No newline at end of file