diff --git a/services/manifests/ftp.pp b/services/manifests/ftp.pp
index 2f025343a4063fcd340b2bbdcc61c03219aa0b4d..ec3e4cba079f33846add3320e89c5baa2d047f71 100644
--- a/services/manifests/ftp.pp
+++ b/services/manifests/ftp.pp
@@ -2,6 +2,7 @@ class services::ftp {
   package {
     [
       'curl',
+      'flock',
       'jq',
       'moreutils',
       'nginx',