diff --git a/package.json b/package.json
index d20d11d6..93d12467 100644
--- a/package.json
+++ b/package.json
@@ -56,7 +56,7 @@
     "playwright": "^1.55.1",
     "prettier": "^3.6.2",
     "sinon": "^19.0.2",
-    "typescript": "^5.6.3",
+    "typescript": "^5.9.3",
     "typescript-eslint": "^8.53.1",
     "vitest": "^4.0.14"
   },
diff --git a/yarn.lock b/yarn.lock
index da89adfe..ac151ad2 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -9219,23 +9219,23 @@ __metadata:
   languageName: node
   linkType: hard
 
-"typescript@npm:^5.6.3":
-  version: 5.6.3
-  resolution: "typescript@npm:5.6.3"
+"typescript@npm:^5.9.3":
+  version: 5.9.3
+  resolution: "typescript@npm:5.9.3"
   bin:
     tsc: bin/tsc
     tsserver: bin/tsserver
-  checksum: ba302f8822777ebefb28b554105f3e074466b671e7444ec6b75dadc008a62f46f373d9e57ceced1c433756d06c8b7dc569a7eefdf3a9573122a49205ff99021a
+  checksum: 0d0ffb84f2cd072c3e164c79a2e5a1a1f4f168e84cb2882ff8967b92afe1def6c2a91f6838fb58b168428f9458c57a2ba06a6737711fdd87a256bbe83e9a217f
   languageName: node
   linkType: hard
 
-"typescript@patch:typescript@^5.6.3#~builtin<compat/typescript>":
-  version: 5.6.3
-  resolution: "typescript@patch:typescript@npm%3A5.6.3#~builtin<compat/typescript>::version=5.6.3&hash=14eedb"
+"typescript@patch:typescript@^5.9.3#~builtin<compat/typescript>":
+  version: 5.9.3
+  resolution: "typescript@patch:typescript@npm%3A5.9.3#~builtin<compat/typescript>::version=5.9.3&hash=14eedb"
   bin:
     tsc: bin/tsc
     tsserver: bin/tsserver
-  checksum: ade87bce2363ee963eed0e4ca8a312ea02c81873ebd53609bc3f6dc0a57f6e61ad7e3fb8cbb7f7ab8b5081cbee801b023f7c4823ee70b1c447eae050e6c7622b
+  checksum: 8bb8d86819ac86a498eada254cad7fb69c5f74778506c700c2a712daeaff21d3a6f51fd0d534fe16903cb010d1b74f89437a3d02d4d0ff5ca2ba9a4660de8497
   languageName: node
   linkType: hard
 
@@ -9430,7 +9430,7 @@ __metadata:
     sinon: ^19.0.2
     tailwindcss: ^4.1.17
     terser: ^5.39.0
-    typescript: ^5.6.3
+    typescript: ^5.9.3
     typescript-eslint: ^8.53.1
     vitest: ^4.0.14
   languageName: unknown