diff --git a/CHANGELOG.md b/CHANGELOG.md
index 08c7e6b2..d946eec3 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 `biome@latest` to 2.5.11.
+
 ## [2.87.0] - 2026-08-27
 
 - Support `kache`. ([#1980](https://github.com/taiki-e/install-action/pull/1980), thanks @ChrisJr404)
diff --git a/manifests/biome.json b/manifests/biome.json
index 3602dfe2..290614d4 100644
--- a/manifests/biome.json
+++ b/manifests/biome.json
@@ -2,13 +2,51 @@
   "rust_crate": null,
   "template": null,
   "latest": {
-    "version": "2.5.10"
+    "version": "2.5.11"
   },
   "2": {
-    "version": "2.5.10"
+    "version": "2.5.11"
   },
   "2.5": {
-    "version": "2.5.10"
+    "version": "2.5.11"
+  },
+  "2.5.11": {
+    "x86_64_linux_musl": {
+      "url": "https://github.com/biomejs/biome/releases/download/%40biomejs/biome%402.5.11/biome-linux-x64-musl",
+      "etag": "0x8DF047CB55F6407",
+      "hash": "6ae4389db2e140734af826963e677a6a78dca9690bb089127aef50d8f9edbadb",
+      "bin": "biome"
+    },
+    "x86_64_macos": {
+      "url": "https://github.com/biomejs/biome/releases/download/%40biomejs/biome%402.5.11/biome-darwin-x64",
+      "etag": "0x8DF047CB55190EA",
+      "hash": "74f6d1845e5c1a47ebafd42ba4a90ed174b4bb7a669d70acc1fd925894dbb168",
+      "bin": "biome"
+    },
+    "x86_64_windows": {
+      "url": "https://github.com/biomejs/biome/releases/download/%40biomejs/biome%402.5.11/biome-win32-x64.exe",
+      "etag": "0x8DF047CB59358F9",
+      "hash": "8bdf679275458a444f7befb8dacc38001625645cc498facf3cc114d77239f1cd",
+      "bin": "biome.exe"
+    },
+    "aarch64_linux_musl": {
+      "url": "https://github.com/biomejs/biome/releases/download/%40biomejs/biome%402.5.11/biome-linux-arm64-musl",
+      "etag": "0x8DF047CB5233AEA",
+      "hash": "d279c5e36af85d712a906284af0d2dd43d4baee8a36e2139f072c891fbeacfd9",
+      "bin": "biome"
+    },
+    "aarch64_macos": {
+      "url": "https://github.com/biomejs/biome/releases/download/%40biomejs/biome%402.5.11/biome-darwin-arm64",
+      "etag": "0x8DF047CB5321E4B",
+      "hash": "7a067b00fdf8eeefb7f5f5f247b7dac1bb23adfeaea380a91293353b8e2eba2b",
+      "bin": "biome"
+    },
+    "aarch64_windows": {
+      "url": "https://github.com/biomejs/biome/releases/download/%40biomejs/biome%402.5.11/biome-win32-arm64.exe",
+      "etag": "0x8DF047CB543E4BD",
+      "hash": "e7db8b25ed9ddc602d0f0809643a0f1006ae10e67229d5e5de2926085c858b2c",
+      "bin": "biome.exe"
+    }
   },
   "2.5.10": {
     "x86_64_linux_musl": {