diff --git a/bucket/mdbook.json b/bucket/mdbook.json
new file mode 100644
index 0000000000..edc9fa1e16
--- /dev/null
+++ b/bucket/mdbook.json
@@ -0,0 +1,21 @@
+{
+    "version": "0.3.5",
+    "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/v0.3.5/mdbook-v0.3.5-x86_64-pc-windows-msvc.zip",
+            "hash": "e349550aecdd2b43f9ab134c167932ba478d5d8e7ce00406f6419fe94472a4a1"
+        }
+    },
+    "bin": "mdbook.exe",
+    "checkver": "github",
+    "autoupdate": {
+        "architecture": {
+            "64bit": {
+                "url": "https://github.com/rust-lang/mdBook/releases/download/v$version/mdbook-v$version-x86_64-pc-windows-msvc.zip"
+            }
+        }
+    }
+}