diff --git a/CHANGELOG.md b/CHANGELOG.md
index 9b39e397..8ab16e94 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -10,6 +10,8 @@ Note: In this file, do not use the hard wrap in the middle of a sentence for com
 
 ## [Unreleased]
 
+- Update `mdbook@latest` to 0.4.49.
+
 ## [2.50.7] - 2025-05-04
 
 - Update `cargo-tarpaulin@latest` to 0.32.4.
diff --git a/manifests/mdbook.json b/manifests/mdbook.json
index 3ddfc70f..b1bacff8 100644
--- a/manifests/mdbook.json
+++ b/manifests/mdbook.json
@@ -22,10 +22,32 @@
   },
   "license_markdown": "[MPL-2.0](https://github.com/rust-lang/mdBook/blob/master/LICENSE)",
   "latest": {
-    "version": "0.4.48"
+    "version": "0.4.49"
   },
   "0.4": {
-    "version": "0.4.48"
+    "version": "0.4.49"
+  },
+  "0.4.49": {
+    "x86_64_linux_musl": {
+      "etag": "0x8DD8C21B533DF5D",
+      "checksum": "d0d06b19fcbc328a1f5576a6070a742b1e694c6dd439535f61b56e3afaeca9a6"
+    },
+    "x86_64_macos": {
+      "etag": "0x8DD8C21B0C1D5FB",
+      "checksum": "1d1dc5c9a029ec0ff9fce9f04761f8d80a9315adc0ec8f0300307c92ccc3bbea"
+    },
+    "x86_64_windows": {
+      "etag": "0x8DD8C2223C6F190",
+      "checksum": "5458bedfa01ec59abd01c56b7622a4a6260db3186e461d6e0dabb345a75b1162"
+    },
+    "aarch64_linux_musl": {
+      "etag": "0x8DD8C21C0E91CDD",
+      "checksum": "a3217eb5f28f58e92b7a5c4f2d5e0a2a9368d90275c05a58ea154013c8558bf8"
+    },
+    "aarch64_macos": {
+      "etag": "0x8DD8C21B04286B4",
+      "checksum": "2bf34e3037aeab8423113dca1c7917832cf04a690158d6cfc086a74886c32553"
+    }
   },
   "0.4.48": {
     "x86_64_linux_musl": {