diff --git a/CHANGELOG.md b/CHANGELOG.md
index 700d4b44..22f3d8be 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,18 @@
+X.Y.Z Release notes
+=============================================================
+### Breaking changes
+* None.
+
+### Enhancements
+* None.
+
+### Bug fixes
+* Validate that a given type appears at most once in the schema.
+
+### Internal
+* None.
+
+
 2.2.10 Release notes (2018-2-20)
 =============================================================
 ### Breaking changes
diff --git a/src/object-store b/src/object-store
index 9aab0ffd..d5fe9a62 160000
--- a/src/object-store
+++ b/src/object-store
@@ -1 +1 @@
-Subproject commit 9aab0ffd5bc7bfc438ec28375ba581cf732f57ee
+Subproject commit d5fe9a626c0adc0345d128201e0df8bb4004725d