diff --git a/bucket/mdbook.json b/bucket/mdbook.json
index 8672fae5bf..fbc33a4f11 100644
--- a/bucket/mdbook.json
+++ b/bucket/mdbook.json
@@ -1,12 +1,12 @@
 {
-    "version": "0.4.47",
+    "version": "0.4.48",
     "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/v0.4.47/mdbook-v0.4.47-x86_64-pc-windows-msvc.zip",
-            "hash": "e582371711a510cf9854046c202b891a4e8931177994359d466c909fd72eff3d"
+            "url": "https://github.com/rust-lang/mdBook/releases/download/v0.4.48/mdbook-v0.4.48-x86_64-pc-windows-msvc.zip",
+            "hash": "4cf46efda130de406619d7480983afdb2dd6e2e91e33100d6c75aac6940bc772"
         }
     },
     "bin": "mdbook.exe",