diff --git a/images/docker-calibre.md b/images/docker-calibre.md
index 0d6ccea04..fa6826edd 100644
--- a/images/docker-calibre.md
+++ b/images/docker-calibre.md
@@ -162,6 +162,7 @@ We publish various [Docker Mods](https://github.com/linuxserver/docker-mods) to
 
 ## Versions
 
+* **19.04.21:** - Add libnss3 back in. Make sure Calibre can access environment variables.
 * **18.04.21:** - Start calibre on container start rather than gui connect.
 * **15.04.21:** - Rebase to rdesktop-web baseimage. Deprecate `GUAC_USER` and `GUAC_PASS` env vars. Existing users can set the new var `PASSWORD` for the user `abc`.
 * **25.09.20:** - Switch to python3, add various new dependencies for calibre 5.0.