diff --git a/charts/milvus/Chart.yaml b/charts/milvus/Chart.yaml
index 4825670d..2a9397ce 100644
--- a/charts/milvus/Chart.yaml
+++ b/charts/milvus/Chart.yaml
@@ -3,7 +3,7 @@ name: milvus
 appVersion: "2.5.14"
 kubeVersion: "^1.10.0-0"
 description: Milvus is an open-source vector database built to power AI applications and vector similarity search.
-version: 4.2.55
+version: 4.2.56
 keywords:
   - milvus
   - elastic
diff --git a/charts/milvus/values.yaml b/charts/milvus/values.yaml
index be2d75dd..fa35dc71 100644
--- a/charts/milvus/values.yaml
+++ b/charts/milvus/values.yaml
@@ -695,7 +695,7 @@ etcd:
     create: false
   image:
     repository: "milvusdb/etcd"
-    tag: "3.5.18-r1"
+    tag: "3.5.21-r2"
     pullPolicy: IfNotPresent
 
   service: