diff --git a/Dockerfile b/Dockerfile
index aee9be8..a1e92d5 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -2,5 +2,5 @@ FROM php:apache
 LABEL maintainer="Luke Tainton <luke@tainton.uk>"
 COPY --chown=www-data:www-data hesk /srv
 COPY vhost.conf /etc/apache2/sites-enabled/000-default.conf
-RUN docker-php-ext-install mysqli
+RUN docker-php-ext-install mysqli imap
 RUN a2enmod rewrite