diff --git a/bucket/mdbook.json b/bucket/mdbook.json
index fcb1906e48..95335d2900 100644
--- a/bucket/mdbook.json
+++ b/bucket/mdbook.json
@@ -1,12 +1,12 @@
 {
-    "version": "0.5.1",
+    "version": "0.5.2",
     "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/v0.5.1/mdbook-v0.5.1-x86_64-pc-windows-msvc.zip",
-            "hash": "81d66447326ba7d595d546b3986f889ce617c6ecde7d713920996eba616a061d"
+            "url": "https://github.com/rust-lang/mdBook/releases/download/v0.5.2/mdbook-v0.5.2-x86_64-pc-windows-msvc.zip",
+            "hash": "e78fa1159bfc381d03f9c6659c48c883706497dc63c9153007a8a4c8df8da166"
         }
     },
     "bin": "mdbook.exe",