diff --git a/build_debian.sh b/build_debian.sh
index 59775f1206da..bd39013dc8ee 100755
--- a/build_debian.sh
+++ b/build_debian.sh
@@ -169,7 +169,7 @@ sudo LANG=C chroot $FILESYSTEM_ROOT apt-get -y install apt-transport-https \
                                                        curl \
                                                        gnupg2 \
                                                        software-properties-common
-sudo LANG=C chroot $FILESYSTEM_ROOT curl -o /tmp/docker.gpg -fsSL https://download.docker.com/linux/debian/gpg
+sudo https_proxy=$https_proxy LANG=C chroot $FILESYSTEM_ROOT curl -o /tmp/docker.gpg -fsSL https://download.docker.com/linux/debian/gpg
 sudo LANG=C chroot $FILESYSTEM_ROOT apt-key add /tmp/docker.gpg
 sudo LANG=C chroot $FILESYSTEM_ROOT rm /tmp/docker.gpg
 sudo LANG=C chroot $FILESYSTEM_ROOT add-apt-repository \