diff --git a/package.json b/package.json
index 77b6b0a..c955e4f 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@corbado/node-sdk",
-  "version": "2.1.0",
+  "version": "2.1.2",
   "description": "This Node.js SDK eases the integration of Corbado's passkey-first authentication solution.",
   "keywords": [
     "passkeys",
diff --git a/src/sdk.ts b/src/sdk.ts
index 43eec13..bfc44f5 100644
--- a/src/sdk.ts
+++ b/src/sdk.ts
@@ -59,6 +59,7 @@ class SDK {
           sdkVersion: process.env.npm_package_version,
           languageVersion: process.version,
         }),
+        'X-Corbado-ProjectID': config.ProjectID,
       },
     });