diff --git a/installer.sh b/installer.sh
index 639039c..90b5342 100644
--- a/installer.sh
+++ b/installer.sh
@@ -31,6 +31,7 @@ REQUIRED_SYSTEM_PACKAGES="
   openssl
   sqlite3
   xxd
+  bsdextrautils
 "
 # Docker packages.
 REQUIRED_DOCKER_PACKAGES="