diff --git a/helm/index.yaml b/helm/index.yaml
index 54783b5b6..eb652d1c2 100644
--- a/helm/index.yaml
+++ b/helm/index.yaml
@@ -1,6 +1,15 @@
 apiVersion: v1
 entries:
   seaweedfs:
+  - apiVersion: v1
+    appVersion: "4.21"
+    created: "2026-04-19T21:51:58.440912195Z"
+    description: SeaweedFS
+    digest: 822e7136ca20abfc67f362f7d683e18aba959684b23346ffccbeb1636a9aea12
+    name: seaweedfs
+    urls:
+    - https://seaweedfs.github.io/seaweedfs/helm/seaweedfs-4.21.0.tgz
+    version: 4.21.0
   - apiVersion: v1
     appVersion: "4.20"
     created: "2026-04-14T09:37:39.152408812Z"
@@ -667,4 +676,4 @@ entries:
     urls:
     - https://seaweedfs.github.io/seaweedfs/helm/seaweedfs-3.42.tgz
     version: "3.42"
-generated: "2026-04-14T09:37:39.147880143Z"
+generated: "2026-04-19T21:51:58.435413208Z"
diff --git a/helm/seaweedfs-4.21.0.tgz b/helm/seaweedfs-4.21.0.tgz
new file mode 100644
index 000000000..e0669df01
Binary files /dev/null and b/helm/seaweedfs-4.21.0.tgz differ