diff --git a/Dockerfile b/Dockerfile
index 2f02a3d..f3f562b 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,6 +1,6 @@
 FROM thallian/confd-env:latest
 
-RUN	apk add --no-cache dovecot dovecot-ldap ssmtp g++ openldap-dev dovecot-dev make
+RUN	apk add --no-cache dovecot dovecot-ldap ssmtp g++ openldap-dev dovecot-dev make tar 
 
 RUN mkdir /tmp/pigeonhole
 RUN wget -qO- http://pigeonhole.dovecot.org/releases/2.2/dovecot-2.2-pigeonhole-0.4.15.tar.gz | tar -xz -C /tmp/pigeonhole --strip 1
@@ -8,7 +8,7 @@ WORKDIR /tmp/pigeonhole
 RUN ./configure --with-ldap=yes --with-dovecot=/usr/lib/dovecot
 RUN make && make install
 
-RUN apk del g++ openldap-dev dovecot-dev make
+RUN apk del g++ openldap-dev dovecot-dev make tar
 
 RUN addgroup -g 1111 vmail
 RUN adduser -u 1111 -h /var/lib/vmail -D -G vmail vmail