diff --git a/functions/gcloud.ts b/functions/gcloud.ts
index d39264f..8a6492e 100644
--- a/functions/gcloud.ts
+++ b/functions/gcloud.ts
@@ -64,7 +64,7 @@ export async function GenerateUploadURL(
   return url;
 }
 
-async function GetAccessToken(env: Env): Promise<string> {
+export async function GetAccessToken(env: Env): Promise<string> {
   const claimSet = btoa(
     JSON.stringify({
       aud: "https://oauth2.googleapis.com/token",