diff --git a/CHANGELOG.md b/CHANGELOG.md
index 26a0b004..4a394345 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 1.31.0.
+
 - Update `wasmtime@latest` to 49.0.3.
 
 - Update `wasm-tools@latest` to 1.262.0.
diff --git a/manifests/zizmor.json b/manifests/zizmor.json
index d92b6ae0..abd19dbf 100644
--- a/manifests/zizmor.json
+++ b/manifests/zizmor.json
@@ -18,10 +18,57 @@
     }
   },
   "latest": {
-    "version": "1.30.1"
+    "version": "1.31.0"
   },
   "1": {
-    "version": "1.30.1"
+    "version": "1.31.0"
+  },
+  "1.31": {
+    "version": "1.31.0"
+  },
+  "1.31.1": {
+    "x86_64_linux_gnu": {
+      "etag": "0x8DF2B11F64E3FEF",
+      "hash": "d185f726bdaf92df78273217dfdd24ebcd6b0ef48cf3ce776ff5762b6e138c99"
+    },
+    "x86_64_macos": {
+      "etag": "0x8DF2B11F63CEE5E",
+      "hash": "72ae63bb85b67229c06242f04195cb43927e9fab5f43803c6434dc701a517d61"
+    },
+    "x86_64_windows": {
+      "etag": "0x8DF2B11F643EB54",
+      "hash": "4de30371c8a3b483aecbcf0dec1fd6a2b6aae65051ca226b4f6527baac6a8c7a"
+    },
+    "aarch64_linux_gnu": {
+      "etag": "0x8DF2B11F6900806",
+      "hash": "37eebbd5762a44f262d94875431b14a6d2402991e90a685113ea97b8b41be833"
+    },
+    "aarch64_macos": {
+      "etag": "0x8DF2B11F65405DB",
+      "hash": "ad5aa633cd56215b11e6c51d51f90c7e6b22904a75047d1215abbd422f61d698"
+    }
+  },
+  "1.31.0": {
+    "x86_64_linux_gnu": {
+      "etag": "0x8DF2A714FC004D3",
+      "hash": "95776c59c2d4c0d6e10560647b4830762b8dbcca8d7d9b7469ff227c73a6fee6"
+    },
+    "x86_64_macos": {
+      "etag": "0x8DF2A714FD8AC58",
+      "hash": "8dd997ebb3314778f12362dd7d002132ab304240e5bee64dec727ba63874dcb9"
+    },
+    "x86_64_windows": {
+      "etag": "0x8DF2A714FBF9022",
+      "hash": "746d82a338981515ffedd049e249349b6d1456f92afcf6cfdd1ea6f958ef9c59"
+    },
+    "aarch64_linux_gnu": {
+      "etag": "0x8DF2A714FC5CAB8",
+      "hash": "99b53699d8fd4f7891a2505d740a6e5b05cd6f3a329e31bad1b8ff24e35d9513"
+    },
+    "aarch64_macos": {
+      "etag": "0x8DF2A714FB8E0E5",
+      "hash": "59cbfffe055f7b605bcc9eae7631073f0c4322be8eb09c670d6a2c23108ba6b9"
+    }
   },
   "1.30": {
     "version": "1.30.1"