diff --git a/data/Dockerfiles/phpfpm/Dockerfile b/data/Dockerfiles/phpfpm/Dockerfile
index e1f121a9..b3aa7839 100644
--- a/data/Dockerfiles/phpfpm/Dockerfile
+++ b/data/Dockerfiles/phpfpm/Dockerfile
@@ -36,6 +36,7 @@ RUN apk add -U --no-cache autoconf \
   mysql-client \
   openldap-dev \
   pcre-dev \
+  re2c \
   redis \
   samba-client \
   zlib-dev \
diff --git a/docker-compose.yml b/docker-compose.yml
index 6a6a97c7..04ebdfcd 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -207,7 +207,7 @@ services:
             - dovecot
 
     postfix-mailcow:
-      image: mailcow/postfix:1.14
+      image: mailcow/postfix:1.15
       build: ./data/Dockerfiles/postfix
       volumes:
         - ./data/conf/postfix:/opt/postfix/conf