diff --git a/sonic-slave/Dockerfile b/sonic-slave/Dockerfile
index b8b31940a98..5ccfaf14f5e 100644
--- a/sonic-slave/Dockerfile
+++ b/sonic-slave/Dockerfile
@@ -2,12 +2,6 @@ FROM debian:jessie
 
 MAINTAINER johnar@microsoft.com
 
-RUN echo "deb http://debian-archive.trafficmanager.net/debian/ jessie main contrib non-free" >> /etc/apt/sources.list
-RUN echo "deb-src http://debian-archive.trafficmanager.net/debian/ jessie main contrib non-free" >> /etc/apt/sources.list
-RUN echo "deb http://debian-archive.trafficmanager.net/debian-security/ jessie/updates main contrib non-free" >> /etc/apt/sources.list
-RUN echo "deb-src http://debian-archive.trafficmanager.net/debian-security/ jessie/updates main contrib non-free" >> /etc/apt/sources.list
-RUN echo 'deb http://debian-archive.trafficmanager.net/debian jessie-backports main' >> /etc/apt/sources.list
-
 ## Make apt-get non-interactive
 ENV DEBIAN_FRONTEND=noninteractive