diff --git a/notes/0.13.8.markdown b/notes/0.13.8.markdown
index b3bc5e650..5386f3a79 100644
--- a/notes/0.13.8.markdown
+++ b/notes/0.13.8.markdown
@@ -52,7 +52,6 @@
   [1881]: https://github.com/sbt/sbt/issues/1881
   [1899]: https://github.com/sbt/sbt/pull/1899
   [1902]: https://github.com/sbt/sbt/pull/1902
-  [1922]: https://github.com/sbt/sbt/pull/1922
 
 ### Changes with compatibility implications
 
@@ -71,7 +70,6 @@
 - Better abstration to track new kinds of dependencies for incremental compiler. [#1340][1340] by [@Duhemm][@Duhemm]
 - Source dependency uses `--depth 1` for git clone. [#1787][1787] by [@xuwei-k][@xuwei-k]
 - Facilitate nicer ways of declaring project settings. See below. [#1902][1902] by [@dwijnand][@dwijnand]
-- Add `-=` and `--=` for settings and tasks, dual of `+=` and `++=`. [#1922][1922] by [@dwijnand][@dwijnand]
 
 ### Fixes
 
diff --git a/notes/0.13.9.markdown b/notes/0.13.9.markdown
new file mode 100644
index 000000000..9e2e4810a
--- /dev/null
+++ b/notes/0.13.9.markdown
@@ -0,0 +1,11 @@
+
+  [@dwijnand]: http://github.com/dwijnand
+  [1922]: https://github.com/sbt/sbt/pull/1922
+
+### Fixes with compatibility implications
+
+### Improvements
+
+- Add `-=` and `--=` for settings and tasks, dual of `+=` and `++=`. [#1922][1922] by [@dwijnand][@dwijnand]
+
+### Bug fixes