diff --git a/sdks/js/package.json b/sdks/js/package.json
index 1599835..ee5cab9 100644
--- a/sdks/js/package.json
+++ b/sdks/js/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@upnd/upend",
-  "version": "0.5.3",
+  "version": "0.5.4",
   "description": "Client library to interact with the UpEnd system.",
   "main": "dist/index.js",
   "types": "dist/index.d.ts",
diff --git a/sdks/js/src/api.ts b/sdks/js/src/api.ts
index 942ba18..3337b93 100644
--- a/sdks/js/src/api.ts
+++ b/sdks/js/src/api.ts
@@ -237,7 +237,7 @@ export class UpEndApi {
   ) {
     let result = `${this.apiUrl}/${config?.preview ? "thumb" : "raw"}/${address}`;
     if (config?.authenticated) {
-      result += `?key=${this.key}`;
+      result += `?auth_key=${this.key}`;
     }
     return result;
   }