diff --git a/src/internal/shared/artifact-twirp-client.ts b/src/internal/shared/artifact-twirp-client.ts
index 4ad3f97..f5f7277 100644
--- a/src/internal/shared/artifact-twirp-client.ts
+++ b/src/internal/shared/artifact-twirp-client.ts
@@ -132,7 +132,8 @@ class ArtifactHttpClient implements Rpc {
       HttpCodes.BadGateway,
       HttpCodes.GatewayTimeout,
       HttpCodes.InternalServerError,
-      HttpCodes.ServiceUnavailable
+      HttpCodes.ServiceUnavailable,
+      HttpCodes.TooManyRequests
     ]
 
     return retryableStatusCodes.includes(statusCode)