diff --git a/bucket/buf.json b/bucket/buf.json
index 04dc499bce..4ef13262e4 100644
--- a/bucket/buf.json
+++ b/bucket/buf.json
@@ -1,12 +1,12 @@
 {
-    "version": "1.39.0",
+    "version": "1.40.0",
     "description": "A tool for working with Protocol Buffers APIs, offering a range of features not found in the standard protoc compiler.",
     "homepage": "https://buf.build/",
     "license": "Apache-2.0",
     "architecture": {
         "64bit": {
-            "url": "https://github.com/bufbuild/buf/releases/download/v1.39.0/buf-Windows-x86_64.exe#/buf.exe",
-            "hash": "7e6c05b03a31ac6a262185fcb72f99266f28a966349eaf7f5d65b771cc504d21"
+            "url": "https://github.com/bufbuild/buf/releases/download/v1.40.0/buf-Windows-x86_64.exe#/buf.exe",
+            "hash": "05e440757efe30f086aaaf29c1b32712f71502c64fc4a05848498eb9a7c1a7d4"
         }
     },
     "bin": "buf.exe",