Cleanup after v3.9.0 release

tf-release-bot · TeamCity · commit be59f7960c15 · 2018-12-04T19:34:13.000Z
diff --git a/CHANGELOG.md b/CHANGELOG.md
@@ -1,3 +1,4 @@
+## 3.9.1 (Unreleased)
 ## 3.9.0 (December 04, 2018)
 
 ### Added
