changelog: Add repositoryformatversion changes
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 86f9955..d209d5f 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -75,6 +75,12 @@
 * If libcurl is installed, we will use it to connect to HTTP(S)
   servers.
 
+* Support for `core.repositoryformatversion = 1` has been added. libgit2
+  will now load optional extensions from the `extensions.` namespace.
+
+* The `extensions.preciousObject` extension is now understood, although
+  no action is taken by libgit2 because all objects are precious to us.
+
 ### API additions
 
 * The `git_merge_options` gained a `file_flags` member.