diff --git a/package.json b/package.json
index ddadf13..ca76882 100644
--- a/package.json
+++ b/package.json
@@ -168,7 +168,7 @@
     "tinyrainbow": "2.0.0",
     "trash-cli": "6.0.0",
     "ts-dedent": "2.2.0",
-    "typescript": "5.8.3",
+    "typescript": "5.9.3",
     "unified": "11.0.5",
     "vfile": "6.0.3",
     "vitest": "3.2.4",
diff --git a/yarn.lock b/yarn.lock
index 97bbff2..85e49f2 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1692,7 +1692,7 @@ __metadata:
     tinyrainbow: "npm:2.0.0"
     trash-cli: "npm:6.0.0"
     ts-dedent: "npm:2.2.0"
-    typescript: "npm:5.8.3"
+    typescript: "npm:5.9.3"
     unified: "npm:11.0.5"
     vfile: "npm:6.0.3"
     vitest: "npm:3.2.4"
@@ -11178,13 +11178,13 @@ __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: 10/65c40944c51b513b0172c6710ee62e951b70af6f75d5a5da745cb7fab132c09ae27ffdf7838996e3ed603bb015dadd099006658046941bd0ba30340cc563ae92
+  checksum: 10/c089d9d3da2729fd4ac517f9b0e0485914c4b3c26f80dc0cffcb5de1719a17951e92425d55db59515c1a7ddab65808466debb864d0d56dcf43f27007d0709594
   languageName: node
   linkType: hard
 
@@ -11198,13 +11198,13 @@ __metadata:
   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: 10/b9b1e73dabac5dc730c041325dbd9c99467c1b0d239f1b74ec3b90d831384af3e2ba973946232df670519147eb51a2c20f6f96163cea2b359f03de1e2091cc4f
+  checksum: 10/696e1b017bc2635f4e0c94eb4435357701008e2f272f553d06e35b494b8ddc60aa221145e286c28ace0c89ee32827a28c2040e3a69bdc108b1a5dc8fb40b72e3
   languageName: node
   linkType: hard