diff --git a/scripts/lib/deps-debian.sh b/scripts/lib/deps-debian.sh
index 84eec25..2be5521 100755
--- a/scripts/lib/deps-debian.sh
+++ b/scripts/lib/deps-debian.sh
@@ -21,6 +21,7 @@ SETHLABELS_DEPS=(
   file dpkg-dev fakeroot
   wget
   bats
+  xvfb
 )
 
 # Detect sourced vs. executed.