diff --git a/package-lock.json b/package-lock.json
index f99fc36..c4e7862 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -6,7 +6,7 @@
   "packages": {
     "": {
       "name": "@ideal-postcodes/openapi",
-      "version": "4.3.0-beta.2",
+      "version": "4.3.0",
       "license": "MIT",
       "devDependencies": {
         "@cablanchard/semantic-release": "~1.3.4",
@@ -14,7 +14,7 @@
         "@redocly/openapi-cli": "~1.0.0-beta.55",
         "@stoplight/prism-cli": "^5.0.0",
         "semantic-release": "~21.0.2",
-        "typescript": "~5.3.3"
+        "typescript": "~5.4.3"
       }
     },
     "node_modules/@babel/code-frame": {
@@ -15022,9 +15022,9 @@
       }
     },
     "node_modules/typescript": {
-      "version": "5.3.3",
-      "resolved": "https://registry.npmjs.org/typescript/-/typescript-5.3.3.tgz",
-      "integrity": "sha512-pXWcraxM0uxAS+tN0AG/BF2TyqmHO014Z070UsJ+pFvYuRSq8KH8DmWpnbXe0pEPDHXZV3FcAbJkijJ5oNEnWw==",
+      "version": "5.4.3",
+      "resolved": "https://registry.npmjs.org/typescript/-/typescript-5.4.3.tgz",
+      "integrity": "sha512-KrPd3PKaCLr78MalgiwJnA25Nm8HAmdwN3mYUYZgG/wizIo9EainNVQI9/yDavtVFRN2h3k8uf3GLHuhDMgEHg==",
       "dev": true,
       "bin": {
         "tsc": "bin/tsc",
@@ -26672,9 +26672,9 @@
       }
     },
     "typescript": {
-      "version": "5.3.3",
-      "resolved": "https://registry.npmjs.org/typescript/-/typescript-5.3.3.tgz",
-      "integrity": "sha512-pXWcraxM0uxAS+tN0AG/BF2TyqmHO014Z070UsJ+pFvYuRSq8KH8DmWpnbXe0pEPDHXZV3FcAbJkijJ5oNEnWw==",
+      "version": "5.4.3",
+      "resolved": "https://registry.npmjs.org/typescript/-/typescript-5.4.3.tgz",
+      "integrity": "sha512-KrPd3PKaCLr78MalgiwJnA25Nm8HAmdwN3mYUYZgG/wizIo9EainNVQI9/yDavtVFRN2h3k8uf3GLHuhDMgEHg==",
       "dev": true
     },
     "uglify-js": {
diff --git a/package.json b/package.json
index 68b61e3..7f66147 100644
--- a/package.json
+++ b/package.json
@@ -8,7 +8,7 @@
     "@redocly/openapi-cli": "~1.0.0-beta.55",
     "@stoplight/prism-cli": "^5.0.0",
     "semantic-release": "~21.0.2",
-    "typescript": "~5.3.3"
+    "typescript": "~5.4.3"
   },
   "scripts": {
     "prepublish": "npm run build",