diff --git a/webmails/roundcube/Dockerfile b/webmails/roundcube/Dockerfile
index f96b91d9..f02270ab 100644
--- a/webmails/roundcube/Dockerfile
+++ b/webmails/roundcube/Dockerfile
@@ -21,6 +21,8 @@ RUN rm -rf /var/www/html/ \
  && rm -rf CHANGELOG INSTALL LICENSE README.md UPGRADING composer.json-dist installer \
  && chown -R www-data: logs
 
+COPY php.ini /usr/local/etc/php/conf.d/rainloop.ini
+
 COPY config.inc.php /var/www/html/config/
 
 COPY start.sh /start.sh
diff --git a/webmails/roundcube/php.ini b/webmails/roundcube/php.ini
new file mode 100644
index 00000000..9b241b46
--- /dev/null
+++ b/webmails/roundcube/php.ini
@@ -0,0 +1,3 @@
+date.timezone=UTC
+upload_max_filesize = 25M
+post_max_size = 25M