diff --git a/CHANGELOG.md b/CHANGELOG.md
index 60b35ef9..fabc1fcf 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 `cargo-binstall@latest` to 1.21.0.
+
 - Update `biome@latest` to 2.5.4.
 
 ## [2.83.2] - 2026-07-12
diff --git a/manifests/cargo-binstall.json b/manifests/cargo-binstall.json
index eb0fbcf2..eda82cda 100644
--- a/manifests/cargo-binstall.json
+++ b/manifests/cargo-binstall.json
@@ -24,36 +24,36 @@
     }
   },
   "latest": {
-    "version": "1.20.1"
+    "version": "1.21.0"
   },
-  "1.20.1": {
+  "1.21.0": {
     "x86_64_linux_musl": {
-      "etag": "0x8DECF44FD1488CD",
-      "hash": "f12954bc382e1d0b2df3fbfb217a05d92c25570e4517841e0613499a24f4594e"
+      "etag": "0x8DEE1994C53774E",
+      "hash": "b1880b3631d1ff0fd1f286a0d20f82f373355651f9fbd7f4d0d7fbfe218bf562"
     },
     "x86_64_macos": {
-      "etag": "0x8DECF450270113C",
-      "hash": "349f5ec5f8b996e990993c90c504211321d8bf839e11e409e8fa3b628eefc56f"
+      "etag": "0x8DEE19951CD804E",
+      "hash": "ad7cd72d8074ef613ab392cae291c7c8bcc25a4f6690e726ed665ded8640871e"
     },
     "x86_64_windows": {
-      "etag": "0x8DECF4500AC2B18",
-      "hash": "89123c22482e2503a5fa861fa30cd61c59c708a97e8550143c1a11de98ae2658"
+      "etag": "0x8DEE1994FF39023",
+      "hash": "f87cc2ca3a103664dab3eac521aa4e49ae72fa0b1e70fba837cd12932001629b"
     },
     "aarch64_linux_musl": {
-      "etag": "0x8DECF450B5A21EF",
-      "hash": "23679581c4cfa1782953264a6e36965198aed995b3a5287550dd78a113ce2288"
+      "etag": "0x8DEE1995B4237C2",
+      "hash": "31f0564854bd031f20c9abfe33312ea630e6a06a2f6d6309b54b5649608f55be"
     },
     "aarch64_macos": {
-      "etag": "0x8DECF4511540D6D",
-      "hash": "691c4fda20d2e58920dc056e4eb7dacec6de448bb547aca17b0ae819716ebef6"
+      "etag": "0x8DEE19961DF6DE7",
+      "hash": "e44737132b2d0543e72a6f128307ebbf204b171f57b2ea9db55b8bbe54b6b632"
     },
     "aarch64_windows": {
-      "etag": "0x8DECF450F3E28FD",
-      "hash": "f4cf0507cf304cc41b964beb90e4c755c4263e28b31e3c4eefbe0aec9a971eea"
+      "etag": "0x8DEE1995F965E06",
+      "hash": "3ccaa7cc4b7d4ef00ffc9b080299e9b4d7e344a3b62ac81e4fd8d934d7ecbd76"
     },
     "riscv64_linux_musl": {
-      "etag": "0x8DECF4506006072",
-      "hash": "1ab8aabf7cc2898e01de95e515625555a96371bb467d0154fa5d566799f672cf"
+      "etag": "0x8DEE19955A7F7B1",
+      "hash": "6e3d8344d398ef52937c30ed9653652821dcd56e31028f0d8b72a6f01410412c"
     }
   }
 }