diff --git a/CHANGELOG.md b/CHANGELOG.md
index f2f7e872..ab7f49d2 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,7 @@
+## 0.5.9
+ - fix regression for `Union{Bool,Nothing}` array elements (#617)
+ - fix printing issue in `printtoc` 
+
 ## 0.5.8
  - Stop using `Base.module_keys` as it is removed on nightly
 
diff --git a/Project.toml b/Project.toml
index 71b75d7b..a86f6234 100644
--- a/Project.toml
+++ b/Project.toml
@@ -1,6 +1,6 @@
 name = "JLD2"
 uuid = "033835bb-8acc-5ee8-8aae-3f567f8a3819"
-version = "0.5.8"
+version = "0.5.9"
 
 [deps]
 FileIO = "5789e2e9-d7fb-5bc7-8068-2c6fae9b9549"