diff --git a/CHANGES.md b/CHANGES.md
index 7f1dbe2..606b033 100644
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -1,3 +1,17 @@
+version 0.5 (2020-07-30)
+
+- sysconfig:
+  - change defaults of MUSAGE and DUSAGE for balance task to do less work,
+    with a script to switch from existing unmodified defaults to new ones
+  - document systemd.timer syntax
+- make balance, scrub, and trim mutually exclusive tasks
+- service file updates:
+  - delete Install section
+- defrag-plugin:
+  - switch to python3
+  - add alternative shell implementation of the plugin
+- installation docs update
+
 version 0.4.2 (2018-09-25)
 - CVE-2018-14722: expand auto mountpoints in a safe way
 - btrfs-defrag: fix missing function to detect btrfs filesystems (#52)
diff --git a/btrfsmaintenance.spec b/btrfsmaintenance.spec
index b767c96..7832116 100644
--- a/btrfsmaintenance.spec
+++ b/btrfsmaintenance.spec
@@ -22,7 +22,7 @@
 %endif
 
 Name:           btrfsmaintenance
-Version:        0.4.2
+Version:        0.5
 Release:        0
 Summary:        Scripts for btrfs periodic maintenance tasks
 License:        GPL-2.0-only