diff --git a/README.md b/README.md
index 1f5bebc60..157f29b62 100644
--- a/README.md
+++ b/README.md
@@ -755,10 +755,10 @@ 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/4385cd6
-[addon-doc-bookstack]: https://github.com/hassio-addons/addon-bookstack/blob/4385cd6/README.md
+[addon-bookstack]: https://github.com/hassio-addons/addon-bookstack/tree/6b9a6ac
+[addon-doc-bookstack]: https://github.com/hassio-addons/addon-bookstack/blob/6b9a6ac/README.md
 [bookstack-issue]: https://github.com/hassio-addons/addon-bookstack/issues
-[bookstack-version-shield]: https://img.shields.io/badge/version-4385cd6-blue.svg
+[bookstack-version-shield]: https://img.shields.io/badge/version-6b9a6ac-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 16475d0a1..e19406ed7 100644
--- a/bookstack/CHANGELOG.md
+++ b/bookstack/CHANGELOG.md
@@ -1,4 +1,5 @@
 # Changelog since v0.9.0
+- ⬆️ Upgrades BookStack to v21.04.3 (#88) 
 - Remove NGINX access log from Supervisor log ouput (#87) 
 - Apply updated repository structure & CI workflow (#86) 
 - ⬆️ Upgrades add-on base image to v9.2.0 (#85) 
diff --git a/bookstack/README.md b/bookstack/README.md
index b36f763d7..60df48809 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-4385cd6-blue.svg
-[release]: https://github.com/hassio-addons/addon-bookstack/tree/4385cd6
+[release-shield]: https://img.shields.io/badge/version-6b9a6ac-blue.svg
+[release]: https://github.com/hassio-addons/addon-bookstack/tree/6b9a6ac
 [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 5d39760f7..485162c04 100644
--- a/bookstack/config.json
+++ b/bookstack/config.json
@@ -1,6 +1,6 @@
 {
   "name": "Bookstack",
-  "version": "4385cd6",
+  "version": "6b9a6ac",
   "slug": "bookstack",
   "description": "Simple & Free Wiki Software",
   "url": "https://github.com/hassio-addons/addon-bookstack",