diff --git a/CHANGELOG.md b/CHANGELOG.md
index 6b7b41e7..8c6b0ab1 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 0.4.48.
+
 ## [2.49.40] - 2025-03-31
 
 - Update `typos@latest` to 1.31.1.
diff --git a/manifests/mdbook.json b/manifests/mdbook.json
index 8692a38a..3ddfc70f 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": "0.4.47"
+    "version": "0.4.48"
   },
   "0.4": {
-    "version": "0.4.47"
+    "version": "0.4.48"
+  },
+  "0.4.48": {
+    "x86_64_linux_musl": {
+      "etag": "0x8DD70986420EBE3",
+      "checksum": "202aa83dcbe63629f229c8bb7ad18b974ad524c9676d10e6794dc2e176d47980"
+    },
+    "x86_64_macos": {
+      "etag": "0x8DD70984ACFD943",
+      "checksum": "c609fcc53261689e2b1da93c194c175f8f18ca297f4af83a43c5c0cbb39a165b"
+    },
+    "x86_64_windows": {
+      "etag": "0x8DD7098B38BD07A",
+      "checksum": "4cf46efda130de406619d7480983afdb2dd6e2e91e33100d6c75aac6940bc772"
+    },
+    "aarch64_linux_musl": {
+      "etag": "0x8DD70986140DE12",
+      "checksum": "348ad43e18d05685bf03080e30ee1f559709166d628e67cda23fae3d051e5dce"
+    },
+    "aarch64_macos": {
+      "etag": "0x8DD70985B84B5A7",
+      "checksum": "d53e314bf1aeb9914bdec89d24a3a7904d3174d034846b5476750a0c6a5a57c5"
+    }
   },
   "0.4.47": {
     "x86_64_linux_musl": {