diff --git a/honggfuzz/install-root-debian b/honggfuzz/install-root-debian
index 7d83009..2a5564a 100755
--- a/honggfuzz/install-root-debian
+++ b/honggfuzz/install-root-debian
@@ -1,4 +1,4 @@
 #!/bin/bash
 set -eu -o pipefail
 
-apt-get install libbfd-dev libunwind8-dev
+apt-get install -y libbfd-dev libunwind8-dev