diff --git a/CHANGELOG.md b/CHANGELOG.md
index dceb5d3e..e733b368 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 `zizmor@latest` to 1.12.1.
+
 - Update `protoc@latest` to 3.32.0.
 
 ## [2.58.12] - 2025-08-14
diff --git a/manifests/zizmor.json b/manifests/zizmor.json
index f9aeeefa..9ecb1a99 100644
--- a/manifests/zizmor.json
+++ b/manifests/zizmor.json
@@ -19,10 +19,35 @@
   },
   "license_markdown": "[MIT](https://github.com/zizmorcore/zizmor/blob/main/LICENSE)",
   "latest": {
-    "version": "1.11.0"
+    "version": "1.12.1"
   },
   "1": {
-    "version": "1.11.0"
+    "version": "1.12.1"
+  },
+  "1.12": {
+    "version": "1.12.1"
+  },
+  "1.12.1": {
+    "x86_64_linux_gnu": {
+      "etag": "0x8DDDBB56FA0BAE3",
+      "checksum": "d73cd379078cae18d5439ce1f8716d30de5a4d2d29cac62cfbe01e6a8251fe0e"
+    },
+    "x86_64_macos": {
+      "etag": "0x8DDDBB56FA7DED0",
+      "checksum": "d1157e117c14ffc41bf8892cb67c1e2c33ed9bca4d38cdfaf445d426f767319e"
+    },
+    "x86_64_windows": {
+      "etag": "0x8DDDBB56F9D157F",
+      "checksum": "243a226659b3b0738feeda82fa55aab596060701c69124128ad944e5d5b671af"
+    },
+    "aarch64_linux_gnu": {
+      "etag": "0x8DDDBB56FA8537F",
+      "checksum": "1c00179dce2cd9db2f62666272037a4f8640a45f0c9de0b3137376ce3e997519"
+    },
+    "aarch64_macos": {
+      "etag": "0x8DDDBB56F9E25C9",
+      "checksum": "a3b8172813a28c5e6745075242ccc2bb2d3cf910bf2b04259313b0228fbf5d23"
+    }
   },
   "1.11": {
     "version": "1.11.0"