diff --git a/clusters/cl01tl/applications/calibre-server/values.yaml b/clusters/cl01tl/applications/calibre-server/values.yaml
index 92e4827be..1a32c9f2e 100644
--- a/clusters/cl01tl/applications/calibre-server/values.yaml
+++ b/clusters/cl01tl/applications/calibre-server/values.yaml
@@ -9,7 +9,7 @@ calibre-server:
         main:
           image:
             repository: ghcr.io/linuxserver/calibre
-            tag: 7.20.0@sha256:67544618e8c0ab3e57bcae6cdf519b0cfe2f47d47b15776351598f18eaf5f413 
+            tag: 7.21.0@sha256:759773a89c64ceb77e4ffdbace0bb70c8266b1f58aaaa3937d45b45ac8fab8ae 
             pullPolicy: IfNotPresent
           env:
             - name: PGID