diff --git a/CHANGELOG.md b/CHANGELOG.md
index d73d865d..d6408307 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 `wasm-tools@latest` to 1.255.0.
+
 - Update `tombi@latest` to 1.2.5.
 
 - Update `mise@latest` to 2026.7.18.
diff --git a/manifests/wasm-tools.json b/manifests/wasm-tools.json
index d65ecad7..dbd60fb2 100644
--- a/manifests/wasm-tools.json
+++ b/manifests/wasm-tools.json
@@ -23,10 +23,35 @@
     }
   },
   "latest": {
-    "version": "1.254.0"
+    "version": "1.255.0"
   },
   "1": {
-    "version": "1.254.0"
+    "version": "1.255.0"
+  },
+  "1.255": {
+    "version": "1.255.0"
+  },
+  "1.255.0": {
+    "x86_64_linux_gnu": {
+      "etag": "0x8DEEE7588FC791F",
+      "hash": "a62237f4731c45f665f1115cad39acaeec02963cbc848c9473ab033eed837072"
+    },
+    "x86_64_macos": {
+      "etag": "0x8DEEE758929E824",
+      "hash": "21f0d003c5a937f29fe4cbbcb947b41ed7cc14982b8680abb15ba4078cb6a227"
+    },
+    "x86_64_windows": {
+      "etag": "0x8DEEE758912A74C",
+      "hash": "04380e13369d7282af0bfc7f34e3e2958b5f3bbc260611a3dccebbc3c9b81cb1"
+    },
+    "aarch64_linux_gnu": {
+      "etag": "0x8DEEE7588922114",
+      "hash": "b51adcd4b7e2b85c689af3a1800534e7de192fdf47b1b6b6a8b5bcb0f449c392"
+    },
+    "aarch64_macos": {
+      "etag": "0x8DEEE758898F736",
+      "hash": "58bf83fdfa59da2c70ac6eb8dd395870934d8e3af835ff9311f34b9072586547"
+    }
   },
   "1.254": {
     "version": "1.254.0"