diff --git a/notes/0.13.6.md b/notes/0.13.6.markdown
similarity index 99%
rename from notes/0.13.6.md
rename to notes/0.13.6.markdown
index fa4923d1c..998fe9f76 100644
--- a/notes/0.13.6.md
+++ b/notes/0.13.6.markdown
@@ -74,10 +74,6 @@
   [@puffnfresh]: https://github.com/puffnfresh
   [@rtyley]: https://github.com/rtyley
 
-### Changes since 0.13.6-M1
-
-- Fixes `NullPointerException` during `update`. [#1484][1484] by [@eed3si9n][@eed3si9n]
-
 ### Fixes with compatibility implications
 
 - Maven Central Repository, Java.net Maven 2 Repository, Typesafe Repository, and sbt Plugin repository now defaults to HTTPS. (See below)
diff --git a/notes/about.md b/notes/about.markdown
similarity index 100%
rename from notes/about.md
rename to notes/about.markdown