diff --git a/packages/i18n/package.json b/packages/i18n/package.json
index e7582c9..bd86e73 100644
--- a/packages/i18n/package.json
+++ b/packages/i18n/package.json
@@ -35,6 +35,6 @@
     "@gecut/logger": "^1.4.3",
     "@gecut/signal": "^2.2.0",
     "@gecut/types": "^2.2.1",
-    "type-fest": "^4.13.0"
+    "type-fest": "^4.20.0"
   }
 }
diff --git a/packages/lit-helper/package.json b/packages/lit-helper/package.json
index 125404f..d8d95c7 100644
--- a/packages/lit-helper/package.json
+++ b/packages/lit-helper/package.json
@@ -47,6 +47,6 @@
     "lit": "^3.1.3",
     "lit-html": "^3.1.2",
     "tslib": "^2.6.2",
-    "type-fest": "^4.13.0"
+    "type-fest": "^4.20.0"
   }
 }
diff --git a/yarn.lock b/yarn.lock
index 4051627..87aefc9 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -290,7 +290,7 @@ __metadata:
     "@gecut/logger": "npm:^1.4.3"
     "@gecut/signal": "npm:^2.2.0"
     "@gecut/types": "npm:^2.2.1"
-    type-fest: "npm:^4.13.0"
+    type-fest: "npm:^4.20.0"
   languageName: unknown
   linkType: soft
 
@@ -309,7 +309,7 @@ __metadata:
     lit: "npm:^3.1.3"
     lit-html: "npm:^3.1.2"
     tslib: "npm:^2.6.2"
-    type-fest: "npm:^4.13.0"
+    type-fest: "npm:^4.20.0"
   languageName: unknown
   linkType: soft
 
@@ -6765,13 +6765,6 @@ __metadata:
   languageName: node
   linkType: hard
 
-"type-fest@npm:^4.13.0":
-  version: 4.13.0
-  resolution: "type-fest@npm:4.13.0"
-  checksum: 10c0/9259549d37dec14ac0f759af42fb6305f08ba46f74bf066caec6b925a674c0021e3921586d41ce0c60d5e1721348d0ff86fff5f9fb5fa12176dd5f2572822c51
-  languageName: node
-  linkType: hard
-
 "type-fest@npm:^4.2.0, type-fest@npm:^4.6.0, type-fest@npm:^4.8.3":
   version: 4.11.1
   resolution: "type-fest@npm:4.11.1"
@@ -6779,6 +6772,13 @@ __metadata:
   languageName: node
   linkType: hard
 
+"type-fest@npm:^4.20.0":
+  version: 4.20.0
+  resolution: "type-fest@npm:4.20.0"
+  checksum: 10c0/d0b35152f7f0b34b3048fb14d93d8d6dfe6288d443a2ab7b7b8c1dd902278e092aa057ad7cfc30f269f17d42eeb14a19d4d147ecb14dff74a5941c5c82248efa
+  languageName: node
+  linkType: hard
+
 "typed-array-buffer@npm:^1.0.2":
   version: 1.0.2
   resolution: "typed-array-buffer@npm:1.0.2"