diff --git a/scripts/build.sh b/scripts/build.sh
index 81023aab3..1d2d2a6d6 100755
--- a/scripts/build.sh
+++ b/scripts/build.sh
@@ -16,6 +16,9 @@
 
 source $(dirname $0)/common.sh
 
+# Install required packages for make_repository.sh et al.
+sudo apt-get update && sudo apt-get install -y dpkg-sig coreutils gpg apt-utils
+
 # Build runsc.
 runsc=$(build -c opt //runsc)