diff --git a/.drone.yml b/.drone.yml
index 397c869..4a563b7 100644
--- a/.drone.yml
+++ b/.drone.yml
@@ -32,6 +32,7 @@ steps:
       REGISTRY_USERNAME: drone
       REGISTRY_PASSWORD:
         from_secret: drone_secret
+      DOCKER_MAX_CONCURRENT_UPLOADS: 1
     commands:
       - apk add --no-cache bash
       - ./mirror.sh