diff --git a/CHANGELOG.md b/CHANGELOG.md
index 131a7901..76862c27 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,4 +1,7 @@
-## 0.4.42 
+## 0.4.43
+ - do not try to `rconvert` `#undef` array elements (#529)
+
+## 0.4.42
  - improvements in time-to-first save/load on julia v1.10 and up
  - discourage from using custom serialization to `Array` and stop using it internally
  as it cannot properly preserve object identity.
diff --git a/Project.toml b/Project.toml
index 40f87339..2ff556ae 100644
--- a/Project.toml
+++ b/Project.toml
@@ -1,6 +1,6 @@
 name = "JLD2"
 uuid = "033835bb-8acc-5ee8-8aae-3f567f8a3819"
-version = "0.4.42"
+version = "0.4.43"
 
 [deps]
 FileIO = "5789e2e9-d7fb-5bc7-8068-2c6fae9b9549"