diff --git a/package.json b/package.json
index 4f9b71028..6937527a6 100644
--- a/package.json
+++ b/package.json
@@ -86,7 +86,7 @@
     "markdownlint-cli2": "^0.17.2",
     "markdownlint-rule-max-one-sentence-per-line": "^0.0.2",
     "prettier": "3.6.2",
-    "typescript": "5.8.3",
+    "typescript": "5.9.3",
     "wireit": "^0.14.12"
   },
   "browserslist": {
diff --git a/yarn.lock b/yarn.lock
index b64eb953a..286b0d1dd 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -8483,7 +8483,7 @@ __metadata:
     tailwindcss: "npm:^3.4.16"
     tailwindcss-animate: "npm:^1.0.7"
     tsconfig-paths: "npm:^4.2.0"
-    typescript: "npm:5.8.3"
+    typescript: "npm:5.9.3"
     wireit: "npm:^0.14.12"
   languageName: unknown
   linkType: soft
@@ -18267,23 +18267,23 @@ __metadata:
   languageName: node
   linkType: hard
 
-"typescript@npm:5.8.3":
-  version: 5.8.3
-  resolution: "typescript@npm:5.8.3"
+"typescript@npm:5.9.3":
+  version: 5.9.3
+  resolution: "typescript@npm:5.9.3"
   bin:
     tsc: bin/tsc
     tsserver: bin/tsserver
-  checksum: 10c0/5f8bb01196e542e64d44db3d16ee0e4063ce4f3e3966df6005f2588e86d91c03e1fb131c2581baf0fb65ee79669eea6e161cd448178986587e9f6844446dbb48
+  checksum: 10c0/6bd7552ce39f97e711db5aa048f6f9995b53f1c52f7d8667c1abdc1700c68a76a308f579cd309ce6b53646deb4e9a1be7c813a93baaf0a28ccd536a30270e1c5
   languageName: node
   linkType: hard
 
-"typescript@patch:typescript@npm%3A5.8.3#optional!builtin<compat/typescript>":
-  version: 5.8.3
-  resolution: "typescript@patch:typescript@npm%3A5.8.3#optional!builtin<compat/typescript>::version=5.8.3&hash=5786d5"
+"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: 10c0/39117e346ff8ebd87ae1510b3a77d5d92dae5a89bde588c747d25da5c146603a99c8ee588c7ef80faaf123d89ed46f6dbd918d534d641083177d5fac38b8a1cb
+  checksum: 10c0/ad09fdf7a756814dce65bc60c1657b40d44451346858eea230e10f2e95a289d9183b6e32e5c11e95acc0ccc214b4f36289dcad4bf1886b0adb84d711d336a430
   languageName: node
   linkType: hard