diff --git a/copyparty/__version__.py b/copyparty/__version__.py
index dac47bf4..021b2bd6 100644
--- a/copyparty/__version__.py
+++ b/copyparty/__version__.py
@@ -1,8 +1,8 @@
 # coding: utf-8
 
-VERSION = (1, 20, 20)
+VERSION = (1, 20, 21)
 CODENAME = "sftp is fine too"
-BUILD_DT = (2026, 8, 4)
+BUILD_DT = (2026, 8, 17)
 
 S_VERSION = ".".join(map(str, VERSION))
 S_BUILD_DT = "{0:04d}-{1:02d}-{2:02d}".format(*BUILD_DT)
diff --git a/docs/changelog.md b/docs/changelog.md
index b679b8f5..b1224b9c 100644
--- a/docs/changelog.md
+++ b/docs/changelog.md
@@ -1,3 +1,26 @@
+▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀  
+# 2026-0803-2232  `v1.20.20`  more wopi
+
+## 🧪 new features
+
+* #1574 #1585 wopi: probably support onlyoffice as wopi-client (thx @kamaeff!) fdf52a8c 
+* #1580 wopi: `--wopi-urls` to choose a different wopi-client url based on current domain (thx @kamaeff!) 24a4090f
+* #634 #1033 #1390 correct size of volumes in directory listings (thx @vmattphillips!) 5c157be9
+* #1577 thumbnails for krita `.kra` and openraster `.ora` images (thx @Wuerfel21!) 9f5f9d88
+* hotkey F4 to reload/refresh the directory listing 2c6497b6
+
+## 🩹 bugfixes
+
+* #1581 ctrl-a in search results 28801172
+
+## 🔧 other changes
+
+* show an explanation in the web-UI if javascript is broken due to misconfigured hosting-stack (the ["csp nonce"](https://github.com/9001/copyparty/#csp-nonce) stuff) 6f924829
+* improve upload performance when running behind a buggy or bufferbloating reverseproxy c0c638c9
+* #1582 Nixos: fix version checker (thx @sylfn!) 63c61b67
+
+
+
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 # 2026-0727-2202  `v1.20.19`  SECURITY: fix FTP upload outside volume