diff --git a/.env b/.env
index 43605ad..ce8cf55 100644
--- a/.env
+++ b/.env
@@ -1,6 +1,3 @@
-# just for storage, only used manully
-VERCEL_TOKEN=jHo8acroWcT3NjbOqT70DIZz
-
 # Each demo has separate origin due to relying party restrictions (https://webauthn.wtf/how-it-works/relying-party)
 NEXT_PUBLIC_DEFAULT_EXAMPLE_ORIGIN="http://localhost:3000"
 NEXT_PUBLIC_UPGRADE_EXAMPLE_ORIGIN="http://localhost:3001"
\ No newline at end of file
diff --git a/examples/webauthn-default/package.json b/examples/webauthn-default/package.json
index 10c5916..d1f3496 100644
--- a/examples/webauthn-default/package.json
+++ b/examples/webauthn-default/package.json
@@ -3,7 +3,8 @@
     "version": "0.0.1",
     "type": "module",
     "scripts": {
-        "dev": "next dev --turbopack -p 3000",
+        "types-check": "tsc --noEmit -w",
+        "dev": "next dev --turbopack -p 3000 & yarn types-check",
         "build": "next build",
         "start": "next start -p 3000",
         "lint": "eslint-lint --config=eslint.config.mjs ./src/**/*.{ts,tsx}",
@@ -16,7 +17,8 @@
         "@workspace/sentry": "workspace:*",
         "next": "15.0.3",
         "react": "18.3.1",
-        "react-dom": "18.3.1"
+        "react-dom": "18.3.1",
+        "typescript": "5.7.2"
     },
     "devDependencies": {
         "@tooling/eslint": "workspace:*",
diff --git a/examples/webauthn-upgrade/package.json b/examples/webauthn-upgrade/package.json
index 177f4b0..62ee11f 100644
--- a/examples/webauthn-upgrade/package.json
+++ b/examples/webauthn-upgrade/package.json
@@ -3,7 +3,8 @@
     "version": "0.0.1",
     "type": "module",
     "scripts": {
-        "dev": "next dev --turbopack -p 3001",
+        "types-check": "tsc --noEmit -w",
+        "dev": "next dev --turbopack -p 3001 & yarn types-check",
         "build": "next build",
         "start": "next start -p 3001",
         "lint": "eslint-lint --config=eslint.config.mjs ./src/**/*.{ts,tsx}",
@@ -16,7 +17,8 @@
         "@workspace/sentry": "workspace:*",
         "next": "15.0.3",
         "react": "18.3.1",
-        "react-dom": "18.3.1"
+        "react-dom": "18.3.1",
+        "typescript": "5.7.2"
     },
     "devDependencies": {
         "@tooling/eslint": "workspace:*",
diff --git a/package.json b/package.json
index 8489195..23b2293 100644
--- a/package.json
+++ b/package.json
@@ -9,7 +9,7 @@
     },
     "scripts": {
         "postinstall": "turbo telemetry disable",
-        "build": "turbo run build --parallel",
+        "build": "yarn workspace @workspace/common build && turbo run build --parallel",
         "dev": "yarn workspace @workspace/common build && turbo run dev --concurrency 100%",
         "cir-dep": "turbo run cir-dep --parallel",
         "test:ci": "turbo run test:ci",
diff --git a/packages/common/package.json b/packages/common/package.json
index 792003d..224b8c0 100644
--- a/packages/common/package.json
+++ b/packages/common/package.json
@@ -8,7 +8,7 @@
         "lint:fix": "yarn lint --fix",
         "format": "prettier-format",
         "cir-dep": "check-cir-deps .",
-        "build": "yarn clean && tsc && tsc-alias",
+        "build": "tsc && tsc-alias",
         "clean": "rm -rf dist .cache",
         "dev": "tsc -w & tsc-alias -w"
     },
diff --git a/packages/common/src/server/services/challenge-session/index.ts b/packages/common/src/server/services/challenge-session/index.ts
index 8295c32..2851104 100644
--- a/packages/common/src/server/services/challenge-session/index.ts
+++ b/packages/common/src/server/services/challenge-session/index.ts
@@ -10,7 +10,7 @@ import { deleteChallengeSession, getChallengeSession, setChallengeSession } from
 
 export type InitializeChallengeSessionProps = {
     timeout: number;
-    challenge: ArrayBuffer;
+    challenge: Uint8Array;
 } & (
     | {
           type: 'attestation';
@@ -39,6 +39,7 @@ export async function initializeChallengeSession(
     await setChallengeSession({
         ...restProps,
         id: sessionId,
+        // @ts-ignore
         challenge: bufferToBase64URLString(challenge),
         expiresAt: expiresAt.toISOString(),
         origin: env.NEXT_PUBLIC_CLIENT_ORIGIN,
diff --git a/yarn.lock b/yarn.lock
index ab4760c..b6549d2 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -9862,6 +9862,7 @@ __metadata:
     next: "npm:15.0.3"
     react: "npm:18.3.1"
     react-dom: "npm:18.3.1"
+    typescript: "npm:5.7.2"
   languageName: unknown
   linkType: soft
 
@@ -9879,6 +9880,7 @@ __metadata:
     next: "npm:15.0.3"
     react: "npm:18.3.1"
     react-dom: "npm:18.3.1"
+    typescript: "npm:5.7.2"
   languageName: unknown
   linkType: soft