diff --git a/src/priceClient/adapters/baseAdapter.ts b/src/priceClient/adapters/baseAdapter.ts
index 007af247..06d9600c 100644
--- a/src/priceClient/adapters/baseAdapter.ts
+++ b/src/priceClient/adapters/baseAdapter.ts
@@ -40,6 +40,7 @@ export class BaseHTTPAdapter {
   protected async query(path: string, urlArgs?: object): Promise<unknown> {
     const url = `https://${this.host}/${path ?? ""}`;
     const args = {
+      headers: { "User-Agent": process.env.ACROSS_USER_AGENT ?? "across-protocol" },
       timeout: this.timeout,
       params: urlArgs ?? {},
     };