diff --git a/README.md b/README.md
index 283c280bd..cb8eb73cf 100644
--- a/README.md
+++ b/README.md
@@ -806,10 +806,10 @@ SOFTWARE.
 [bitwarden-armhf-shield]: https://img.shields.io/badge/armhf-no-red.svg
 [bitwarden-armv7-shield]: https://img.shields.io/badge/armv7-yes-green.svg
 [bitwarden-i386-shield]: https://img.shields.io/badge/i386-no-red.svg
-[addon-bookstack]: https://github.com/hassio-addons/addon-bookstack/tree/a53169a
-[addon-doc-bookstack]: https://github.com/hassio-addons/addon-bookstack/blob/a53169a/README.md
+[addon-bookstack]: https://github.com/hassio-addons/addon-bookstack/tree/a1243cf
+[addon-doc-bookstack]: https://github.com/hassio-addons/addon-bookstack/blob/a1243cf/README.md
 [bookstack-issue]: https://github.com/hassio-addons/addon-bookstack/issues
-[bookstack-version-shield]: https://img.shields.io/badge/version-a53169a-blue.svg
+[bookstack-version-shield]: https://img.shields.io/badge/version-a1243cf-blue.svg
 [bookstack-aarch64-shield]: https://img.shields.io/badge/aarch64-yes-green.svg
 [bookstack-amd64-shield]: https://img.shields.io/badge/amd64-yes-green.svg
 [bookstack-armhf-shield]: https://img.shields.io/badge/armhf-yes-green.svg
diff --git a/bookstack/CHANGELOG.md b/bookstack/CHANGELOG.md
index 201a3d546..f18ee95c0 100644
--- a/bookstack/CHANGELOG.md
+++ b/bookstack/CHANGELOG.md
@@ -1,4 +1,5 @@
 # Changelog since v0.8.5
+- ⬆ Update Bookstack to v21.04 (#72) 
 - ⬆️ Upgrades add-on base image to v9.1.7 (#71) 
 - Bump docker/setup-qemu-action from v1.0.1 to v1.0.2 (#70)
 
diff --git a/bookstack/README.md b/bookstack/README.md
index d2f0c72f8..5418d0ec6 100644
--- a/bookstack/README.md
+++ b/bookstack/README.md
@@ -42,6 +42,6 @@ If you are more interested in stable releases of our add-ons:
 [forum]: https://community.home-assistant.io/?u=frenck
 [maintenance-shield]: https://img.shields.io/maintenance/yes/2021.svg
 [project-stage-shield]: https://img.shields.io/badge/project%20stage-experimental-yellow.svg
-[release-shield]: https://img.shields.io/badge/version-a53169a-blue.svg
-[release]: https://github.com/hassio-addons/addon-bookstack/tree/a53169a
+[release-shield]: https://img.shields.io/badge/version-a1243cf-blue.svg
+[release]: https://github.com/hassio-addons/addon-bookstack/tree/a1243cf
 [screenshot]: https://github.com/hassio-addons/addon-bookstack/raw/main/images/screenshot.png
\ No newline at end of file
diff --git a/bookstack/config.json b/bookstack/config.json
index e7971dcc1..fd5ae2481 100644
--- a/bookstack/config.json
+++ b/bookstack/config.json
@@ -1,6 +1,6 @@
 {
   "name": "Bookstack",
-  "version": "a53169a",
+  "version": "a1243cf",
   "slug": "bookstack",
   "description": "Simple & Free Wiki Software",
   "url": "https://github.com/hassio-addons/addon-bookstack",