diff --git a/CHANGELOG.md b/CHANGELOG.md
index efe4c9f5..e79fe17d 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 1.16.3.
+
 ## [2.62.47] - 2025-11-05
 
 - Update `vacuum@latest` to 0.20.0.
diff --git a/manifests/zizmor.json b/manifests/zizmor.json
index d170d9ef..0e87f2d0 100644
--- a/manifests/zizmor.json
+++ b/manifests/zizmor.json
@@ -19,13 +19,35 @@
   },
   "license_markdown": "[MIT](https://github.com/zizmorcore/zizmor/blob/main/LICENSE)",
   "latest": {
-    "version": "1.16.2"
+    "version": "1.16.3"
   },
   "1": {
-    "version": "1.16.2"
+    "version": "1.16.3"
   },
   "1.16": {
-    "version": "1.16.2"
+    "version": "1.16.3"
+  },
+  "1.16.3": {
+    "x86_64_linux_gnu": {
+      "etag": "0x8DE1C7FFE921005",
+      "checksum": "f0070985e94dd7b29e30abe249f6c7b2f14078c35a8f2de78e2d6ce89de0c132"
+    },
+    "x86_64_macos": {
+      "etag": "0x8DE1C7FFE947E3A",
+      "checksum": "9a309feafef2ddc01cdd855144118aa941d59c7d88983155c3a8d24b24f693b0"
+    },
+    "x86_64_windows": {
+      "etag": "0x8DE1C7FFE859AE3",
+      "checksum": "3e18f4be09b8491be5063a881983dae457f6a4dce18cd519da7c5e0c6d41c23e"
+    },
+    "aarch64_linux_gnu": {
+      "etag": "0x8DE1C7FFE973A40",
+      "checksum": "9a511665b1b237f2d2f326b2f013fb4b3da3fc94013ff9ba2704c072b4dae126"
+    },
+    "aarch64_macos": {
+      "etag": "0x8DE1C7FFE960325",
+      "checksum": "d3967cfe45a2c99338dd116a5a3989787f0b9b3cd2e342ba354929f959de856f"
+    }
   },
   "1.16.2": {
     "x86_64_linux_gnu": {