diff --git a/package.json b/package.json
index b6286f13..f53cbe47 100644
--- a/package.json
+++ b/package.json
@@ -89,7 +89,7 @@
 		"svelte": "^5.0.0",
 		"svelte-check": "^4.0.0",
 		"tailwindcss": "4.1.14",
-		"typescript": "5.5.4",
+		"typescript": "5.9.3",
 		"typescript-eslint": "^8.23.0",
 		"viem": "2",
 		"vitest": "^3.0.0",
diff --git a/yarn.lock b/yarn.lock
index 82776614..7491f92d 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1828,7 +1828,7 @@ __metadata:
     svelte: "npm:^5.0.0"
     svelte-check: "npm:^4.0.0"
     tailwindcss: "npm:4.1.14"
-    typescript: "npm:5.5.4"
+    typescript: "npm:5.9.3"
     typescript-eslint: "npm:^8.23.0"
     viem: "npm:2"
     vitest: "npm:^3.0.0"
@@ -17358,13 +17358,13 @@ __metadata:
   languageName: node
   linkType: hard
 
-"typescript@npm:5.5.4":
-  version: 5.5.4
-  resolution: "typescript@npm:5.5.4"
+"typescript@npm:5.9.3":
+  version: 5.9.3
+  resolution: "typescript@npm:5.9.3"
   bin:
     tsc: bin/tsc
     tsserver: bin/tsserver
-  checksum: 10c0/422be60f89e661eab29ac488c974b6cc0a660fb2228003b297c3d10c32c90f3bcffc1009b43876a082515a3c376b1eefcce823d6e78982e6878408b9a923199c
+  checksum: 10c0/6bd7552ce39f97e711db5aa048f6f9995b53f1c52f7d8667c1abdc1700c68a76a308f579cd309ce6b53646deb4e9a1be7c813a93baaf0a28ccd536a30270e1c5
   languageName: node
   linkType: hard
 
@@ -17388,13 +17388,13 @@ __metadata:
   languageName: node
   linkType: hard
 
-"typescript@patch:typescript@npm%3A5.5.4#optional!builtin<compat/typescript>":
-  version: 5.5.4
-  resolution: "typescript@patch:typescript@npm%3A5.5.4#optional!builtin<compat/typescript>::version=5.5.4&hash=379a07"
+"typescript@patch:typescript@npm%3A5.9.3#optional!builtin<compat/typescript>":
+  version: 5.9.3
+  resolution: "typescript@patch:typescript@npm%3A5.9.3#optional!builtin<compat/typescript>::version=5.9.3&hash=5786d5"
   bin:
     tsc: bin/tsc
     tsserver: bin/tsserver
-  checksum: 10c0/73409d7b9196a5a1217b3aaad929bf76294d3ce7d6e9766dd880ece296ee91cf7d7db6b16c6c6c630ee5096eccde726c0ef17c7dfa52b01a243e57ae1f09ef07
+  checksum: 10c0/ad09fdf7a756814dce65bc60c1657b40d44451346858eea230e10f2e95a289d9183b6e32e5c11e95acc0ccc214b4f36289dcad4bf1886b0adb84d711d336a430
   languageName: node
   linkType: hard