diff --git a/package-lock.json b/package-lock.json
index 8de5974a..39972b2c 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -5924,9 +5924,9 @@
       }
     },
     "node_modules/@tsd/typescript": {
-      "version": "5.8.3",
-      "resolved": "https://registry.npmjs.org/@tsd/typescript/-/typescript-5.8.3.tgz",
-      "integrity": "sha512-oKarNCN1QUhG148M88mtZdOlBZWWGcInquef+U8QL7gwJkRuNo5WS45Fjsd+3hM9cDJWGpqSZ4Oo097KDx4IWA==",
+      "version": "5.9.3",
+      "resolved": "https://registry.npmjs.org/@tsd/typescript/-/typescript-5.9.3.tgz",
+      "integrity": "sha512-JSSdNiS0wgd8GHhBwnMAI18Y8XPhLVN+dNelPfZCXFhy9Lb3NbnFyp9JKxxr54jSUkEJPk3cidvCoHducSaRMQ==",
       "dev": true,
       "license": "MIT",
       "engines": {
@@ -17222,38 +17222,6 @@
         }
       }
     },
-    "node_modules/tsd": {
-      "version": "0.32.0",
-      "resolved": "https://registry.npmjs.org/tsd/-/tsd-0.32.0.tgz",
-      "integrity": "sha512-R5lBZCbxGBowOcW0gpQaiIjGYrG5NmU+PfFDKcc3zbtzWjML1o/zAwzdDnS2ZheSlPu9GW51azpFqEPUBq9DoQ==",
-      "dev": true,
-      "license": "MIT",
-      "dependencies": {
-        "@tsd/typescript": "~5.8.3",
-        "eslint-formatter-pretty": "^4.1.0",
-        "globby": "^11.0.1",
-        "jest-diff": "^29.0.3",
-        "meow": "^9.0.0",
-        "path-exists": "^4.0.0",
-        "read-pkg-up": "^7.0.0"
-      },
-      "bin": {
-        "tsd": "dist/cli.js"
-      },
-      "engines": {
-        "node": ">=14.16"
-      }
-    },
-    "node_modules/tsd/node_modules/path-exists": {
-      "version": "4.0.0",
-      "resolved": "https://registry.npmjs.org/path-exists/-/path-exists-4.0.0.tgz",
-      "integrity": "sha512-ak9Qy5Q7jYb2Wwcey5Fpvg2KoAc/ZIhLSLOSBmRmygPsGwkVVt0fZa0qrtMz+m6tJTAHfZQ8FnmB4MG4LWy7/w==",
-      "dev": true,
-      "license": "MIT",
-      "engines": {
-        "node": ">=8"
-      }
-    },
     "node_modules/tslib": {
       "version": "2.8.1",
       "resolved": "https://registry.npmjs.org/tslib/-/tslib-2.8.1.tgz",
@@ -19630,6 +19598,16 @@
         "url": "https://github.com/sponsors/sindresorhus"
       }
     },
+    "packages/functions/node_modules/path-exists": {
+      "version": "4.0.0",
+      "resolved": "https://registry.npmjs.org/path-exists/-/path-exists-4.0.0.tgz",
+      "integrity": "sha512-ak9Qy5Q7jYb2Wwcey5Fpvg2KoAc/ZIhLSLOSBmRmygPsGwkVVt0fZa0qrtMz+m6tJTAHfZQ8FnmB4MG4LWy7/w==",
+      "dev": true,
+      "license": "MIT",
+      "engines": {
+        "node": ">=8"
+      }
+    },
     "packages/functions/node_modules/pidtree": {
       "version": "0.5.0",
       "dev": true,
@@ -19692,7 +19670,7 @@
       "devDependencies": {
         "npm-run-all2": "^5.0.0",
         "semver": "^7.6.3",
-        "tsd": "^0.32.0",
+        "tsd": "^0.33.0",
         "tsup": "^8.0.2",
         "vitest": "^3.0.0"
       },
@@ -19700,6 +19678,28 @@
         "node": ">=18.0.0"
       }
     },
+    "packages/functions/prod/node_modules/tsd": {
+      "version": "0.33.0",
+      "resolved": "https://registry.npmjs.org/tsd/-/tsd-0.33.0.tgz",
+      "integrity": "sha512-/PQtykJFVw90QICG7zyPDMIyueOXKL7jOJVoX5pILnb3Ux+7QqynOxfVvarE+K+yi7BZyOSY4r+OZNWSWRiEwQ==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "@tsd/typescript": "^5.9.2",
+        "eslint-formatter-pretty": "^4.1.0",
+        "globby": "^11.0.1",
+        "jest-diff": "^29.0.3",
+        "meow": "^9.0.0",
+        "path-exists": "^4.0.0",
+        "read-pkg-up": "^7.0.0"
+      },
+      "bin": {
+        "tsd": "dist/cli.js"
+      },
+      "engines": {
+        "node": ">=14.16"
+      }
+    },
     "packages/headers": {
       "name": "@netlify/headers",
       "version": "2.1.0",
diff --git a/packages/functions/prod/package.json b/packages/functions/prod/package.json
index 2ccce0e7..e57afc4c 100644
--- a/packages/functions/prod/package.json
+++ b/packages/functions/prod/package.json
@@ -73,7 +73,7 @@
   "devDependencies": {
     "npm-run-all2": "^5.0.0",
     "semver": "^7.6.3",
-    "tsd": "^0.32.0",
+    "tsd": "^0.33.0",
     "tsup": "^8.0.2",
     "vitest": "^3.0.0"
   },