diff --git a/.changeset/light-brooms-sparkle.md b/.changeset/light-brooms-sparkle.md
new file mode 100644
index 0000000..37d3345
--- /dev/null
+++ b/.changeset/light-brooms-sparkle.md
@@ -0,0 +1,5 @@
+---
+"@effect/dtslint": patch
+---
+
+add typescript 5.4
diff --git a/.vscode/settings.json b/.vscode/settings.json
index 55a04b7..f33b509 100644
--- a/.vscode/settings.json
+++ b/.vscode/settings.json
@@ -22,13 +22,9 @@
   "[typescriptreact]": {
     "editor.defaultFormatter": "dbaeumer.vscode-eslint"
   },
-  "eslint.validate": [
-    "markdown",
-    "javascript",
-    "typescript"
-  ],
+  "eslint.validate": ["markdown", "javascript", "typescript"],
   "editor.codeActionsOnSave": {
-    "source.fixAll.eslint": true
+    "source.fixAll.eslint": "explicit"
   },
   "editor.quickSuggestions": {
     "other": true,
@@ -42,7 +38,7 @@
   "editor.tabCompletion": "off",
   "editor.suggest.localityBonus": true,
   "editor.suggestSelection": "recentlyUsed",
-  "editor.wordBasedSuggestions": true,
+  "editor.wordBasedSuggestions": "matchingDocuments",
   "editor.parameterHints.enabled": true,
   "files.watcherExclude": {
     "**/target": true
diff --git a/src/index.ts b/src/index.ts
index 5f48886..37b1bd7 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -14,10 +14,11 @@ namespace TypeScriptVersion {
     "5.0",
     "5.1",
     "5.2",
-    "5.3"
+    "5.3",
+    "5.4"
   ] as const
   /** Add to this list when a version is available as typescript@next */
-  export const supported = [...shipped, "5.4"] as const
+  export const supported = [...shipped, "5.5"] as const
 
   export const latest = supported[supported.length - 1]
 }