diff --git a/bucket/mdbook.json b/bucket/mdbook.json
index 52304a7551..6f98f72e92 100644
--- a/bucket/mdbook.json
+++ b/bucket/mdbook.json
@@ -1,12 +1,12 @@
 {
-    "version": "0.4.45",
+    "version": "0.4.46",
     "description": "Create a book from markdown files.",
     "homepage": "https://github.com/rust-lang/mdBook",
     "license": "MPL-2.0",
     "architecture": {
         "64bit": {
-            "url": "https://github.com/rust-lang/mdBook/releases/download/v0.4.45/mdbook-v0.4.45-x86_64-pc-windows-msvc.zip",
-            "hash": "ee9025ac339ce151bfb3a9dbfc7bce55580e84b2bcbc02a45a8dcca57dbd8a10"
+            "url": "https://github.com/rust-lang/mdBook/releases/download/v0.4.46/mdbook-v0.4.46-x86_64-pc-windows-msvc.zip",
+            "hash": "6d12a28938a5b40e086311cdd251009619f6b881ab883c646c2b73bfa7b31464"
         }
     },
     "bin": "mdbook.exe",