diff --git a/package.json b/package.json
index fd55349c..f5eef32a 100644
--- a/package.json
+++ b/package.json
@@ -41,7 +41,7 @@
 		"prettier": "^3.3.2",
 		"prettier-plugin-svelte": "^3.2.2",
 		"semantic-release": "^23.0.6",
-		"typescript": "^5.4.2"
+		"typescript": "^5.5.4"
 	},
 	"engines": {
 		"node": ">16",
diff --git a/packages/svelte-vega-sample/package.json b/packages/svelte-vega-sample/package.json
index 08526a19..c66c9c7c 100644
--- a/packages/svelte-vega-sample/package.json
+++ b/packages/svelte-vega-sample/package.json
@@ -22,7 +22,7 @@
 		"svelte": "^4.2.17",
 		"svelte-check": "^3.6.8",
 		"svelte-preprocess": "^5.1.3",
-		"typescript": "^5.4.2",
+		"typescript": "^5.5.4",
 		"vite": "^5.0.3"
 	}
 }
diff --git a/packages/svelte-vega/package.json b/packages/svelte-vega/package.json
index 9f39a267..38836bf5 100644
--- a/packages/svelte-vega/package.json
+++ b/packages/svelte-vega/package.json
@@ -60,7 +60,7 @@
 		"svelte-check": "^3.6.8",
 		"tslib": "^2.6.2",
 		"vite": "^5.0.3",
-		"typescript": "^5.4.2"
+		"typescript": "^5.5.4"
 	},
 	"peerDependencies": {
 		"svelte": "^3.54.0 || ^4.0.0",
diff --git a/packages/sveltekit-vega-sample/package.json b/packages/sveltekit-vega-sample/package.json
index 0cedf4bd..43feaacd 100644
--- a/packages/sveltekit-vega-sample/package.json
+++ b/packages/sveltekit-vega-sample/package.json
@@ -15,7 +15,7 @@
 		"svelte": "^4.2.17",
 		"svelte-check": "^3.6.8",
 		"tslib": "^2.6.2",
-		"typescript": "^5.4.2",
+		"typescript": "^5.5.4",
 		"vite": "^5.0.3"
 	},
 	"type": "module",
diff --git a/yarn.lock b/yarn.lock
index 7a0b3f16..55e16bbf 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -9593,10 +9593,10 @@ typedarray@^0.0.6:
   resolved "https://registry.yarnpkg.com/typedarray/-/typedarray-0.0.6.tgz#867ac74e3864187b1d3d47d996a78ec5c8830777"
   integrity sha512-/aCDEGatGvZ2BIk+HmLf4ifCJFwvKFNb9/JeZPMulfgFracn9QFcAf5GO8B/mweUjSoblS5In0cWhqpfs/5PQA==
 
-typescript@^5.0.3, typescript@^5.4.2:
-  version "5.4.5"
-  resolved "https://registry.yarnpkg.com/typescript/-/typescript-5.4.5.tgz#42ccef2c571fdbd0f6718b1d1f5e6e5ef006f611"
-  integrity sha512-vcI4UpRgg81oIRUFwR0WSIHKt11nJ7SAVlYNIu+QpqeyXP+gpQJy/Z4+F0aGxSE4MqwjyXvW/TzgkLAx2AGHwQ==
+typescript@^5.0.3, typescript@^5.5.4:
+  version "5.5.4"
+  resolved "https://registry.yarnpkg.com/typescript/-/typescript-5.5.4.tgz#d9852d6c82bad2d2eda4fd74a5762a8f5909e9ba"
+  integrity sha512-Mtq29sKDAEYP7aljRgtPOpTvOfbwRWlS6dPRzwjdE+C0R4brX/GUyhHSecbHMFLNBLcJIPt9nl9yG5TZ1weH+Q==
 
 ufo@^1.4.0:
   version "1.5.3"