diff --git a/charts/mastodon/Chart.lock b/charts/mastodon/Chart.lock
index ef2b206f..92320000 100644
--- a/charts/mastodon/Chart.lock
+++ b/charts/mastodon/Chart.lock
@@ -7,6 +7,6 @@ dependencies:
   version: 19.21.2
 - name: redis
   repository: oci://registry-1.docker.io/bitnamicharts
-  version: 20.1.4
-digest: sha256:017ae8a731e8e4518dbe2dfe850eb9096c9950f5ded207a74d3ed951cd81b2da
-generated: "2024-10-21T15:02:59.474378758+02:00"
+  version: 21.0.0
+digest: sha256:8e9b799eeda687844cd215cde47a0777dd54d5b8d1a50cbdce756bfbf2bf023d
+generated: "2025-05-06T16:20:24.25568885Z"
diff --git a/charts/mastodon/Chart.yaml b/charts/mastodon/Chart.yaml
index 8df1f7fc..b336ddb3 100644
--- a/charts/mastodon/Chart.yaml
+++ b/charts/mastodon/Chart.yaml
@@ -9,7 +9,7 @@ type: application
 # This is the chart version. This version number should be incremented each time you make changes
 # to the chart and its templates, including the app version.
 # Versions are expected to follow Semantic Versioning (https://semver.org/)
-version: 9.8.4
+version: 10.0.0
 
 # renovate: image=ghcr.io/mastodon/mastodon
 appVersion: v4.3.6
@@ -26,6 +26,6 @@ dependencies:
     condition: elasticsearch.enabled
 
   - name: redis
-    version: 20.1.4
+    version: 21.0.0
     repository: oci://registry-1.docker.io/bitnamicharts
     condition: redis.enabled
diff --git a/charts/mastodon/README.md b/charts/mastodon/README.md
index 10239d3f..43e8402a 100644
--- a/charts/mastodon/README.md
+++ b/charts/mastodon/README.md
@@ -1,6 +1,6 @@
 # mastodon
 
-![Version: 9.8.4](https://img.shields.io/badge/Version-9.8.4-informational?style=flat-square) ![Type: application](https://img.shields.io/badge/Type-application-informational?style=flat-square) ![AppVersion: v4.3.6](https://img.shields.io/badge/AppVersion-v4.3.6-informational?style=flat-square)
+![Version: 10.0.0](https://img.shields.io/badge/Version-10.0.0-informational?style=flat-square) ![Type: application](https://img.shields.io/badge/Type-application-informational?style=flat-square) ![AppVersion: v4.3.6](https://img.shields.io/badge/AppVersion-v4.3.6-informational?style=flat-square)
 
 Mastodon is a free, open-source social network server based on ActivityPub.
 
@@ -10,7 +10,7 @@ Mastodon is a free, open-source social network server based on ActivityPub.
 |------------|------|---------|
 | oci://registry-1.docker.io/bitnamicharts | elasticsearch | 19.21.2 |
 | oci://registry-1.docker.io/bitnamicharts | postgresql | 16.0.4 |
-| oci://registry-1.docker.io/bitnamicharts | redis | 20.1.4 |
+| oci://registry-1.docker.io/bitnamicharts | redis | 21.0.0 |
 
 ## Values
 
diff --git a/charts/mastodon/charts/redis-20.1.4.tgz b/charts/mastodon/charts/redis-20.1.4.tgz
deleted file mode 100644
index 73bfe732..00000000
Binary files a/charts/mastodon/charts/redis-20.1.4.tgz and /dev/null differ
diff --git a/charts/mastodon/charts/redis-21.0.0.tgz b/charts/mastodon/charts/redis-21.0.0.tgz
new file mode 100644
index 00000000..5f17f811
Binary files /dev/null and b/charts/mastodon/charts/redis-21.0.0.tgz differ