diff --git a/bucket/mdbook.json b/bucket/mdbook.json
index 11befd6569..0e17b4ee16 100644
--- a/bucket/mdbook.json
+++ b/bucket/mdbook.json
@@ -6,7 +6,7 @@
     "architecture": {
         "64bit": {
             "url": "https://github.com/rust-lang/mdBook/releases/download/v0.4.3/mdbook-v0.4.3-x86_64-pc-windows-msvc.zip",
-            "hash": "88ea54a9185d49c20e0f5cad0b84abb6f1fe49362923d9e079697276e6d4c6f7"
+            "hash": "f320e7d588312a1de5f7a6bf0a7a41c141c05c8530ae2992d7677e7b1eed4fcf"
         }
     },
     "bin": "mdbook.exe",