diff --git a/CHANGELOG.md b/CHANGELOG.md
index 3a6fe67..1f9b818 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,16 +2,24 @@
 
 # Master
 
+- Doc: Update Readme with version numbers
 - update Code Owners to include the Heroku Buildpack Maintainers team
 - Deprecation warning: BUILD_WITH_GEO_LIBRARIES is now deprecated. See warning for details.
+- Clean up build log output
+- Update Python versions in README to match docs
+
+--------------------------------------------------------------------------------
+
+# 167 (2020-03-26)
 
 - Add failcase for cache busting
 - Bugfix: Clearing pip dependencies
+
+# 166 (2020-03-05)
+
 - Correct ftp to https in vendored file
 - Warn for Django 1.11 approaching EOL, provide link to roadmap
 
---------------------------------------------------------------------------------
-
 # 165 (2020-02-27)
 
 - Python 3.8.2 now available.
diff --git a/README.md b/README.md
index e3ea62a..8413f67 100644
--- a/README.md
+++ b/README.md
@@ -61,8 +61,9 @@ Specify a Python Runtime
 
 Supported runtime options include:
 
-- `python-3.7.4`
-- `python-3.6.9`
+- `python-3.8.2`
+- `python-3.7.6`
+- `python-3.6.10`
 - `python-2.7.17`
 
 ## Tests
diff --git a/bin/steps/python b/bin/steps/python
index a5c1e12..f613c11 100755
--- a/bin/steps/python
+++ b/bin/steps/python
@@ -110,7 +110,7 @@ if [[ ! -f "$CACHE_DIR/.heroku/requirements.txt" ]]; then
   fi
 else
   # IF there IS a cached directory, check for differences with the new one
-  if ! diff "$BUILD_DIR/requirements.txt" "$CACHE_DIR/.heroku/requirements.txt"; then
+  if ! diff "$BUILD_DIR/requirements.txt" "$CACHE_DIR/.heroku/requirements.txt" &> /dev/null; then
     puts-step "Clearing cached dependencies"
     # if there are any differences, clear the Python cache
     # Installing Python over again does not take noticably more time