diff --git a/Dockerfile b/Dockerfile
index b7d0e4c..fe31047 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -11,7 +11,6 @@ ENV BEAT_TIME 1h
 ENV LOGFILE_RETENTION 3560
 ENV CACHE_DOMAINS_REPO https://github.com/uklans/cache-domains.git
 ENV CACHE_DOMAINS_BRANCH master
-ENV UPSTREAM_DNS 8.8.8.8 8.8.4.4
 ENV NGINX_WORKER_PROCESSES auto
 
 COPY overlay/ /