diff --git a/charts/stable/misskey/Chart.yaml b/charts/stable/misskey/Chart.yaml
index 0e7c2afe395..0c1965a1af8 100644
--- a/charts/stable/misskey/Chart.yaml
+++ b/charts/stable/misskey/Chart.yaml
@@ -9,7 +9,7 @@ annotations:
   truecharts.org/min_helm_version: "3.14"
   truecharts.org/train: stable
 apiVersion: v2
-appVersion: 2025.7.0
+appVersion: 2025.8.0
 dependencies:
   - name: common
     version: 28.16.5
@@ -47,5 +47,5 @@ sources:
   - https://github.com/truecharts/charts/tree/master/charts/stable/misskey
   - https://hub.docker.com/r/misskey/misskey
 type: application
-version: 13.8.8
+version: 13.9.0
 
diff --git a/charts/stable/misskey/values.yaml b/charts/stable/misskey/values.yaml
index 31f6f1b6896..d38267695f7 100644
--- a/charts/stable/misskey/values.yaml
+++ b/charts/stable/misskey/values.yaml
@@ -1,7 +1,7 @@
 image:
   repository: docker.io/misskey/misskey
   pullPolicy: IfNotPresent
-  tag: 2025.7.0@sha256:03ec2f7751cb7912adecf166542119867838ff78f4d0a0c08e654ffdb99f5c13
+  tag: 2025.8.0@sha256:661ac1aec5fa29241626d05ef502858229dd44fed0290d8b5564ce68b2c305f5
 
 securityContext:
   pod: