diff --git a/checksums/registry.bzl b/checksums/registry.bzl
index e8581d9d..fdfeeb60 100644
--- a/checksums/registry.bzl
+++ b/checksums/registry.bzl
@@ -859,13 +859,13 @@ def validate_tool_compatibility(tools_config):
     # Define compatibility matrix (sourced from tool_versions.bzl)
     compatibility_matrix = {
         "1.235.0": {
-            "wac": ["0.7.0", "0.8.0"],
+            "wac": ["0.7.0", "0.8.0", "0.8.1"],
             "wit-bindgen": ["0.43.0", "0.46.0"],
             "wkg": ["0.11.0"],
             "wasmsign2": ["0.2.6"],
         },
         "1.239.0": {
-            "wac": ["0.7.0", "0.8.0"],
+            "wac": ["0.7.0", "0.8.0", "0.8.1"],
             "wit-bindgen": ["0.43.0", "0.46.0"],
             "wkg": ["0.11.0"],
             "wasmsign2": ["0.2.6"],
@@ -906,7 +906,7 @@ def get_recommended_versions(stability = "stable"):
     default_versions = {
         "stable": {
             "wasm-tools": "1.239.0",
-            "wac": "0.8.0",
+            "wac": "0.8.1",
             "wit-bindgen": "0.46.0",
             "wkg": "0.11.0",
             "wasmsign2": "0.2.6",
@@ -915,7 +915,7 @@ def get_recommended_versions(stability = "stable"):
         },
         "latest": {
             "wasm-tools": "1.239.0",
-            "wac": "0.8.0",
+            "wac": "0.8.1",
             "wit-bindgen": "0.46.0",
             "wkg": "0.11.0",
             "wasmsign2": "0.2.6",
diff --git a/checksums/tools/wac.json b/checksums/tools/wac.json
index 97ae816f..19da60ee 100644
--- a/checksums/tools/wac.json
+++ b/checksums/tools/wac.json
@@ -1,14 +1,14 @@
 {
   "tool_name": "wac",
   "github_repo": "bytecodealliance/wac",
-  "latest_version": "0.7.0",
-  "last_checked": "2025-08-02T04:35:39.525232Z",
+  "latest_version": "0.8.1",
+  "last_checked": "2025-11-25T18:00:00.000000Z",
   "versions": {
-    "0.7.0": {
-      "release_date": "2024-11-20",
+    "0.8.0": {
+      "release_date": "2025-08-20",
       "platforms": {
         "linux_amd64": {
-          "sha256": "dd734c4b049287b599a3f8c553325307687a17d070290907e3d5bbe481b89cc6",
+          "sha256": "9fee2d8603dc50403ebed580b47b8661b582ffde8a9174bf193b89ca00decf0f",
           "platform_name": "x86_64-unknown-linux-musl"
         },
         "linux_arm64": {
@@ -16,11 +16,11 @@
           "platform_name": "aarch64-unknown-linux-musl"
         },
         "darwin_amd64": {
-          "sha256": "023645743cfcc167a3004d3c3a62e8209a55cde438e6561172bafcaaafc33a40",
+          "sha256": "cc58f94c611b3b7f27b16dd0a9a9fc63c91c662582ac7eaa9a14f2dac87b07f8",
           "platform_name": "x86_64-apple-darwin"
         },
         "darwin_arm64": {
-          "sha256": "4e2d22c65c51f0919b10c866ef852038b804d3dbcf515c696412566fc1eeec66",
+          "sha256": "6ca7f69f3e2bbab41f375a35e486d53e5b4968ea94271ea9d9bd59b0d2b65c13",
           "platform_name": "aarch64-apple-darwin"
         },
         "windows_amd64": {
@@ -29,27 +29,27 @@
         }
       }
     },
-    "0.8.0": {
-      "release_date": "2024-08-20",
+    "0.8.1": {
+      "release_date": "2025-11-11",
       "platforms": {
         "linux_amd64": {
-          "sha256": "9fee2d8603dc50403ebed580b47b8661b582ffde8a9174bf193b89ca00decf0f",
+          "sha256": "ce30f33c5bc40095cfb4e74ae5fb4ba515d4f4bef2d597831bc7afaaf0d55b6c",
           "platform_name": "x86_64-unknown-linux-musl"
         },
         "linux_arm64": {
-          "sha256": "af966d4efbd411900073270bd4261ac42d9550af8ba26ed49288bb942476c5a9",
+          "sha256": "3b78ae7c732c1376d1c21b570d07152a07342e9c4f75bff1511cde5f6af01f12",
           "platform_name": "aarch64-unknown-linux-musl"
         },
         "darwin_amd64": {
-          "sha256": "cc58f94c611b3b7f27b16dd0a9a9fc63c91c662582ac7eaa9a14f2dac87b07f8",
+          "sha256": "d5fa365a4920d19a61837a42c9273b0b8ec696fd3047af864a860f46005773a5",
           "platform_name": "x86_64-apple-darwin"
         },
         "darwin_arm64": {
-          "sha256": "6ca7f69f3e2bbab41f375a35e486d53e5b4968ea94271ea9d9bd59b0d2b65c13",
+          "sha256": "f08496f49312abd68d9709c735a987d6a17d2295a1240020d217a9de8dcaaacd",
           "platform_name": "aarch64-apple-darwin"
         },
         "windows_amd64": {
-          "sha256": "7ee34ea41cd567b2578929acce3c609e28818d03f0414914a3939f066737d872",
+          "sha256": "b3509dfc3bb9d1e598e7b2790ef6efe5b6c8b696f2ad0e997e9ae6dd20bb6f13",
           "platform_name": "x86_64-pc-windows-gnu"
         }
       }