diff --git a/package-lock.json b/package-lock.json
index cc55bcc..f48eea9 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -6,7 +6,7 @@
   "packages": {
     "": {
       "name": "@ideal-postcodes/openapi",
-      "version": "4.7.0",
+      "version": "4.8.0",
       "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": "~23.0.8",
-        "typescript": "~5.4.5"
+        "typescript": "~5.5.4"
       }
     },
     "node_modules/@babel/code-frame": {
@@ -15143,9 +15143,9 @@
       }
     },
     "node_modules/typescript": {
-      "version": "5.4.5",
-      "resolved": "https://registry.npmjs.org/typescript/-/typescript-5.4.5.tgz",
-      "integrity": "sha512-vcI4UpRgg81oIRUFwR0WSIHKt11nJ7SAVlYNIu+QpqeyXP+gpQJy/Z4+F0aGxSE4MqwjyXvW/TzgkLAx2AGHwQ==",
+      "version": "5.5.4",
+      "resolved": "https://registry.npmjs.org/typescript/-/typescript-5.5.4.tgz",
+      "integrity": "sha512-Mtq29sKDAEYP7aljRgtPOpTvOfbwRWlS6dPRzwjdE+C0R4brX/GUyhHSecbHMFLNBLcJIPt9nl9yG5TZ1weH+Q==",
       "dev": true,
       "bin": {
         "tsc": "bin/tsc",
@@ -26846,9 +26846,9 @@
       }
     },
     "typescript": {
-      "version": "5.4.5",
-      "resolved": "https://registry.npmjs.org/typescript/-/typescript-5.4.5.tgz",
-      "integrity": "sha512-vcI4UpRgg81oIRUFwR0WSIHKt11nJ7SAVlYNIu+QpqeyXP+gpQJy/Z4+F0aGxSE4MqwjyXvW/TzgkLAx2AGHwQ==",
+      "version": "5.5.4",
+      "resolved": "https://registry.npmjs.org/typescript/-/typescript-5.5.4.tgz",
+      "integrity": "sha512-Mtq29sKDAEYP7aljRgtPOpTvOfbwRWlS6dPRzwjdE+C0R4brX/GUyhHSecbHMFLNBLcJIPt9nl9yG5TZ1weH+Q==",
       "dev": true
     },
     "uglify-js": {
diff --git a/package.json b/package.json
index 23dfadb..ac95965 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": "~23.0.8",
-    "typescript": "~5.4.5"
+    "typescript": "~5.5.4"
   },
   "scripts": {
     "prepublish": "npm run build",