diff --git a/Dockerfile b/Dockerfile
index d39301d..3be316a 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -2,7 +2,7 @@ FROM registry.gitlab.com/thallian/docker-confd-env:master
 
 RUN apk add --no-cache libressl openssh-client openldap zlib
 RUN apk add --no-cache --repository http://dl-cdn.alpinelinux.org/alpine/edge/testing \
-    proftpd proftpd-mod_ldap proftpd-mod_sftp proftpd-utils
+    proftpd proftpd-mod_ldap proftpd-mod_sftp proftpd-mod_auth_file proftpd-utils
 
 RUN addgroup -g 2222 access
 RUN addgroup proftpd access