diff --git a/kubernetes/apps/default/sonarr/app/helmrelease.yaml b/kubernetes/apps/default/sonarr/app/helmrelease.yaml
index 9ea3bfd50..c32ed83c7 100644
--- a/kubernetes/apps/default/sonarr/app/helmrelease.yaml
+++ b/kubernetes/apps/default/sonarr/app/helmrelease.yaml
@@ -29,7 +29,7 @@ spec:
   values:
     image:
       repository: ghcr.io/onedr0p/sonarr-develop
-      tag: 4.0.0.413@sha256:64bea7a12a283769205f977661c315e844d7e8bac41ad7964d79790c206ba8f8
+      tag: 4.0.0.421@sha256:0160d9bfd7a95ea9cbfff1eb00d3682a0afefac31aa3fc5e2eedbc701ced70ae
     env:
       TZ: "${TIMEZONE}"
       PUSHOVER_DEBUG: "false"