diff --git a/package-lock.json b/package-lock.json
index 44cdf39..a9d2c6a 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -2297,6 +2297,19 @@
                 "node": ">=16 || 14 >=14.17"
             }
         },
+        "node_modules/tagged-tag": {
+            "version": "1.0.0",
+            "resolved": "https://registry.npmjs.org/tagged-tag/-/tagged-tag-1.0.0.tgz",
+            "integrity": "sha512-yEFYrVhod+hdNyx7g5Bnkkb0G6si8HJurOoOEgC8B/O0uXLHlaey/65KRv6cuWBNhBgHKAROVpc7QyYqE5gFng==",
+            "dev": true,
+            "license": "MIT",
+            "engines": {
+                "node": ">=20"
+            },
+            "funding": {
+                "url": "https://github.com/sponsors/sindresorhus"
+            }
+        },
         "node_modules/thenify": {
             "version": "3.3.1",
             "resolved": "https://registry.npmjs.org/thenify/-/thenify-3.3.1.tgz",
@@ -2473,13 +2486,16 @@
             }
         },
         "node_modules/type-fest": {
-            "version": "4.41.0",
-            "resolved": "https://registry.npmjs.org/type-fest/-/type-fest-4.41.0.tgz",
-            "integrity": "sha512-TeTSQ6H5YHvpqVwBRcnLDCBnDOHWYu7IvGbHT6N8AOymcr9PJGjc1GTtiWZTYg0NCgYwvnYWEkVChQAr9bjfwA==",
+            "version": "5.1.0",
+            "resolved": "https://registry.npmjs.org/type-fest/-/type-fest-5.1.0.tgz",
+            "integrity": "sha512-wQ531tuWvB6oK+pchHIu5lHe5f5wpSCqB8Kf4dWQRbOYc9HTge7JL0G4Qd44bh6QuJCccIzL3bugb8GI0MwHrg==",
             "dev": true,
             "license": "(MIT OR CC0-1.0)",
+            "dependencies": {
+                "tagged-tag": "^1.0.0"
+            },
             "engines": {
-                "node": ">=16"
+                "node": ">=20"
             },
             "funding": {
                 "url": "https://github.com/sponsors/sindresorhus"
@@ -2912,7 +2928,7 @@
             "devDependencies": {
                 "@types/d3-ease": "^3.0.2",
                 "@types/three": "^0.176.0",
-                "type-fest": "^4.41.0",
+                "type-fest": "^5.1.0",
                 "vitest": "^3.2.4"
             }
         }
diff --git a/packages/math/package.json b/packages/math/package.json
index a5089fd..3c23e48 100644
--- a/packages/math/package.json
+++ b/packages/math/package.json
@@ -36,7 +36,7 @@
     "devDependencies": {
         "@types/d3-ease": "^3.0.2",
         "@types/three": "^0.176.0",
-        "type-fest": "^4.41.0",
+        "type-fest": "^5.1.0",
         "vitest": "^3.2.4"
     }
 }