diff --git a/docker/koordlet.dockerfile b/docker/koordlet.dockerfile
index 21ab637ca..45340b0a3 100644
--- a/docker/koordlet.dockerfile
+++ b/docker/koordlet.dockerfile
@@ -7,6 +7,7 @@ ENV VERSION $VERSION
 ENV GOOS linux
 ENV GOARCH $TARGETARCH
 
+RUN sed -i 's#deb.debian.org#ftp.cn.debian.org#' /etc/apt/sources.list
 RUN apt update && apt install -y bash build-essential cmake wget
 RUN wget https://sourceforge.net/projects/perfmon2/files/libpfm4/libpfm-4.13.0.tar.gz && \
   echo "bcb52090f02bc7bcb5ac066494cd55bbd5084e65  libpfm-4.13.0.tar.gz" | sha1sum -c && \