diff --git a/Dockerfile b/Dockerfile
index 4e8a7c63..dfcf8145 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -51,7 +51,7 @@ RUN \
   dovecot-sieve dovecot-solr dumb-init \
   # E - O
   ed fetchmail file gamin gnupg gzip iproute2 iptables \
-  locales logwatch lhasa libdate-manip-perl liblz4-tool \
+  locales logwatch lhasa libdate-manip-perl libldap-common liblz4-tool \
   libmail-spf-perl libnet-dns-perl libsasl2-modules lrzip lzop \
   netcat-openbsd nomarch opendkim opendkim-tools opendmarc \
   # P - Z