diff --git a/package.json b/package.json
index 715bb8ed..22a3498b 100644
--- a/package.json
+++ b/package.json
@@ -35,11 +35,12 @@
   },
   "dependencies": {
     "axios": "^1.12.0",
-    "typescript": "^5.8.3"
+    "typescript": "^5.9.3"
   },
   "devDependencies": {
     "@eslint/compat": "^1.2.9",
     "@types/jest": "^29.5.14",
+    "@types/node": "^25.0.2",
     "@typescript-eslint/eslint-plugin": "^8.33.1",
     "@typescript-eslint/parser": "^8.33.1",
     "axios-mock-adapter": "^2.1.0",
diff --git a/src/tiers/types.ts b/src/tiers/types.ts
index c104283a..9073e720 100644
--- a/src/tiers/types.ts
+++ b/src/tiers/types.ts
@@ -10,6 +10,9 @@ export type Tier = {
     currency: string;
     premiumMonth: number;
     priceOnRequest: boolean;
+    hasBaseFee?: boolean;
+    basefeeMonth?: number;
+    basefeeYear?: number;
   };
   description: string;
   display_features: {
diff --git a/yarn.lock b/yarn.lock
index f0d8c953..f1ff81fd 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -953,6 +953,7 @@ __metadata:
   dependencies:
     "@eslint/compat": "npm:^1.2.9"
     "@types/jest": "npm:^29.5.14"
+    "@types/node": "npm:^25.0.2"
     "@typescript-eslint/eslint-plugin": "npm:^8.33.1"
     "@typescript-eslint/parser": "npm:^8.33.1"
     axios: "npm:^1.12.0"
@@ -966,7 +967,7 @@ __metadata:
     lint-staged: "npm:^15.5.2"
     prettier: "npm:^3.5.3"
     ts-jest: "npm:^29.3.4"
-    typescript: "npm:^5.8.3"
+    typescript: "npm:^5.9.3"
     typescript-eslint: "npm:^8.33.1"
   languageName: unknown
   linkType: soft
@@ -1086,6 +1087,15 @@ __metadata:
   languageName: node
   linkType: hard
 
+"@types/node@npm:^25.0.2":
+  version: 25.0.2
+  resolution: "@types/node@npm:25.0.2"
+  dependencies:
+    undici-types: "npm:~7.16.0"
+  checksum: 8d37061ed51c273551cca3fe36913a448cc5992b687d7c077a5e99eeb3d0f15a8aca81e53ad3f557dc16f4f4b11877832bb4fbb45f3e162066806da969015251
+  languageName: node
+  linkType: hard
+
 "@types/parse-json@npm:^4.0.0":
   version: 4.0.2
   resolution: "@types/parse-json@npm:4.0.2"
@@ -5775,23 +5785,23 @@ __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: 65c40944c51b513b0172c6710ee62e951b70af6f75d5a5da745cb7fab132c09ae27ffdf7838996e3ed603bb015dadd099006658046941bd0ba30340cc563ae92
+  checksum: c089d9d3da2729fd4ac517f9b0e0485914c4b3c26f80dc0cffcb5de1719a17951e92425d55db59515c1a7ddab65808466debb864d0d56dcf43f27007d0709594
   languageName: node
   linkType: hard
 
-"typescript@patch:typescript@npm%3A^5.8.3#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=e012d7"
+"typescript@patch:typescript@npm%3A^5.9.3#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=e012d7"
   bin:
     tsc: bin/tsc
     tsserver: bin/tsserver
-  checksum: 98470634034ec37fd9ea61cc82dcf9a27950d0117a4646146b767d085a2ec14b137aae9642a83d1c62732d7fdcdac19bb6288b0bb468a72f7a06ae4e1d2c72c9
+  checksum: 5d416ad4f2ea564f515a3f919e901edbfa4b497cc17dd325c5726046c3eef7ed22d1f59c787267d478311f6f0a265ff790f8a6c7e9df3ea3471458f5ec81e8b7
   languageName: node
   linkType: hard
 
@@ -5814,6 +5824,13 @@ __metadata:
   languageName: node
   linkType: hard
 
+"undici-types@npm:~7.16.0":
+  version: 7.16.0
+  resolution: "undici-types@npm:7.16.0"
+  checksum: db43439f69c2d94cc29f75cbfe9de86df87061d6b0c577ebe9bb3255f49b22c50162a7d7eb413b0458b6510b8ca299ac7cff38c3a29fbd31af9f504bcf7fbc0d
+  languageName: node
+  linkType: hard
+
 "unique-filename@npm:^3.0.0":
   version: 3.0.0
   resolution: "unique-filename@npm:3.0.0"