diff --git a/CHANGELOG.md b/CHANGELOG.md
index d074bd03..0879bb2d 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-shear@latest` to 1.6.6.
+
 - Update `mise@latest` to 2025.11.8.
 
 - Update `zizmor@latest` to 1.17.0.
diff --git a/manifests/cargo-shear.json b/manifests/cargo-shear.json
index db406272..b202cc26 100644
--- a/manifests/cargo-shear.json
+++ b/manifests/cargo-shear.json
@@ -28,13 +28,39 @@
   },
   "license_markdown": "[MIT](https://github.com/Boshen/cargo-shear/blob/main/LICENSE)",
   "latest": {
-    "version": "1.6.5"
+    "version": "1.6.6"
   },
   "1": {
-    "version": "1.6.5"
+    "version": "1.6.6"
   },
   "1.6": {
-    "version": "1.6.5"
+    "version": "1.6.6"
+  },
+  "1.6.6": {
+    "x86_64_linux_musl": {
+      "etag": "0x8DE2CA491312778",
+      "checksum": "082c5b8b6d807428c6d98e7a4ef8ac8153c66e77d01e48ec8ab992eeae45f1f7"
+    },
+    "x86_64_macos": {
+      "etag": "0x8DE2CA493DF6134",
+      "checksum": "2508dd2f8d823dbe84b1defac714ec02808409905bb467a91f61ef24d226454f"
+    },
+    "x86_64_windows": {
+      "etag": "0x8DE2CA4CC16F865",
+      "checksum": "a8119063fe9e461f20798b35797d5c1baafa2ca9be189d2ad32e3b4c123541db"
+    },
+    "aarch64_linux_musl": {
+      "etag": "0x8DE2CA4965BC666",
+      "checksum": "0de13c7bdb106136da4387e3e5ac4ab102f1a990a99527cf6378621f238f1bae"
+    },
+    "aarch64_macos": {
+      "etag": "0x8DE2CA49AD1755A",
+      "checksum": "b1843beb1459596256e336f8e028346c70b3ed2cec8448156ccc6241609e19c0"
+    },
+    "aarch64_windows": {
+      "etag": "0x8DE2CA4CAF3963C",
+      "checksum": "2b6e07eacf11964fdae49daf49850836f709af7ea4e1b64a8e7e66f9a915bb96"
+    }
   },
   "1.6.5": {
     "x86_64_linux_musl": {