diff --git a/CHANGELOG.md b/CHANGELOG.md
index 2dc4b4e6..edac5ad5 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 `mise@latest` to 2026.10.21.
+
 - Update `cargo-nextest@latest` to 0.9.150.
 
 - Update `cargo-about@latest` to 0.9.3.
diff --git a/manifests/mise.json b/manifests/mise.json
index 43fb6ba9..1e866098 100644
--- a/manifests/mise.json
+++ b/manifests/mise.json
@@ -27,13 +27,65 @@
     }
   },
   "latest": {
-    "version": "2026.10.19"
+    "version": "2026.10.21"
   },
   "2026": {
-    "version": "2026.10.19"
+    "version": "2026.10.21"
   },
   "2026.10": {
-    "version": "2026.10.19"
+    "version": "2026.10.21"
+  },
+  "2026.10.21": {
+    "x86_64_linux_musl": {
+      "etag": "0x8DF341339CD5E3F",
+      "hash": "63b5621467b5b9950b99b7333aec1b4a34c5f23a9e464d330357c5b35502e8d7"
+    },
+    "x86_64_macos": {
+      "etag": "0x8DF3413403B4374",
+      "hash": "722848fc0522a996bccca35ceef614b3926bb1ae97b145fe11bb08cf960b31f9"
+    },
+    "x86_64_windows": {
+      "etag": "0x8DF34134362E953",
+      "hash": "0387d927adb6bee5c69dac077e8c5ae9827463287c17c311bf72dc70b21e566e"
+    },
+    "aarch64_linux_musl": {
+      "etag": "0x8DF34133378CAB2",
+      "hash": "9b44072897d0489d79b8f12de13c3a27342e11f857b614aa58c5f34774c0da75"
+    },
+    "aarch64_macos": {
+      "etag": "0x8DF34133D490811",
+      "hash": "d67b6006cb1144131910ce80d6cf52134f55b9c7da55648bd717df36b3f238d6"
+    },
+    "aarch64_windows": {
+      "etag": "0x8DF3413441F8E72",
+      "hash": "3585ce3a8388bad7410f0c215b420904652051e4437fb848d3197dbb44e76e3a"
+    }
+  },
+  "2026.10.20": {
+    "x86_64_linux_musl": {
+      "etag": "0x8DF33A6564AF196",
+      "hash": "fed09de1b3cc68a54ea2e40140c2a0818fe766113720b2709bf64853decccb10"
+    },
+    "x86_64_macos": {
+      "etag": "0x8DF33A65C911397",
+      "hash": "0cfb0ba5a58670214bdbca2498c1c241583d9e666d997d30d422c67554f75f58"
+    },
+    "x86_64_windows": {
+      "etag": "0x8DF33A65F5CFAA0",
+      "hash": "54644af307306d26f680e6e2391e2da24af149efa6bbd9964e7f81b2eedbc011"
+    },
+    "aarch64_linux_musl": {
+      "etag": "0x8DF33A64ECF3AEC",
+      "hash": "33d3a8711a34842ce6b62cac1223a05e486f8b784d8d64c7021be57e702734e5"
+    },
+    "aarch64_macos": {
+      "etag": "0x8DF33A65A4B4D1D",
+      "hash": "c47629720ff02d5a1f7b3e5923d7cd523baa7ad9531e0ab86d9153ec2f9d25c7"
+    },
+    "aarch64_windows": {
+      "etag": "0x8DF33A65E15853E",
+      "hash": "f50a34398627f8c13eb784053b2767daec990fe19f39f8f6e68d08514a8e15b2"
+    }
   },
   "2026.10.19": {
     "x86_64_linux_musl": {