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-rw-r--r--docker/build_debian.sh1
1 files changed, 1 insertions, 0 deletions
diff --git a/docker/build_debian.sh b/docker/build_debian.sh
index cea5067fe9..6b1b01e57f 100644
--- a/docker/build_debian.sh
+++ b/docker/build_debian.sh
@@ -8,6 +8,7 @@ DIST=`lsb_release -c -s`
 
 # We need to build a newer dh_virtualenv on older OSes like Xenial.
 if [ "$DIST" = 'xenial' ]; then
+    apt-get update
     mkdir -p /tmp/dhvenv
     cd /tmp/dhvenv
     wget https://github.com/spotify/dh-virtualenv/archive/1.1.tar.gz