Cleanup after v1.38.3 release

tf-release-bot · TeamCity · commit 2f8b97c85386 · 2020-07-13T11:07:52.000Z
diff --git a/CHANGELOG.md b/CHANGELOG.md
@@ -1,3 +1,4 @@
+## 1.39.0 (Unreleased)
 ## 1.38.3 (July 13, 2020)
 
 ENHANCEMENTS:
