diff --git a/bucket/etcd.json b/bucket/etcd.json
index 499e70a63d..735f66526c 100644
--- a/bucket/etcd.json
+++ b/bucket/etcd.json
@@ -1,13 +1,13 @@
 {
-    "version": "3.4.20",
+    "version": "3.4.21",
     "description": "A distributed, reliable key-value store for the most critical data of a distributed system",
     "homepage": "https://etcd.io/",
     "license": "Apache-2.0",
     "architecture": {
         "64bit": {
-            "url": "https://github.com/etcd-io/etcd/releases/download/v3.4.20/etcd-v3.4.20-windows-amd64.zip",
-            "hash": "59a644e753bb1b63befdac8ec1ad6849be4213e156309d9406b3c418a7f72dd0",
-            "extract_dir": "etcd-v3.4.20-windows-amd64"
+            "url": "https://github.com/etcd-io/etcd/releases/download/v3.4.21/etcd-v3.4.21-windows-amd64.zip",
+            "hash": "050ab8ef52ece90c40c05dae4913ec3e7dfb54a8e4b5093382a83cf8415f3deb",
+            "extract_dir": "etcd-v3.4.21-windows-amd64"
         }
     },
     "bin": [