diff --git a/core/dovecot/Dockerfile b/core/dovecot/Dockerfile
index b15b83c3..670acc9b 100644
--- a/core/dovecot/Dockerfile
+++ b/core/dovecot/Dockerfile
@@ -1,7 +1,7 @@
-FROM alpine:3.7
+FROM alpine:3.8
 
 RUN apk add --no-cache \
-     dovecot dovecot-pop3d dovecot-lmtpd dovecot-pigeonhole-plugin dovecot-fts-lucene rspamd-client \
+     dovecot dovecot-pigeonhole-plugin dovecot-fts-lucene rspamd-client \
      python3 py3-pip \
  && pip3 install jinja2 podop
 
diff --git a/core/postfix/Dockerfile b/core/postfix/Dockerfile
index e7501a54..30d1103e 100644
--- a/core/postfix/Dockerfile
+++ b/core/postfix/Dockerfile
@@ -1,4 +1,4 @@
-FROM alpine:3.7
+FROM alpine:3.8
 
 RUN apk add --no-cache postfix postfix-pcre rsyslog \
     python3 py3-pip \