diff --git a/README.md b/README.md
index aab4497..e27c503 100644
--- a/README.md
+++ b/README.md
@@ -16,7 +16,7 @@ docker build -t rosariosis .
 RosarioSIS uses a PostgreSQL database:
 
 ``` bash
-$ docker run --name rosariodb -d postgres:9.4 --restart=always
+$ docker run --name rosariodb -d postgres:9.5 --restart=always
 $ docker run -e "ROSARIOSIS_ADMIN_EMAIL=admin@example.com" -h `hostname -f` -d -p 80:80 --name rosariosis --link rosariodb:rosariodb rosariosis --restart=always
 ```
 
@@ -24,7 +24,9 @@ Port 80 will be exposed, so you can visit `localhost` to get started. The defaul
 
 ## SMTP
 
-RosarioSIS will attempt to send mail via the host's port 25.  In order for this to work you must set the hostname of the rosariosis container to that of host (or some other hostname that your can appear on a legal FROM line) and configure the host to accept SMTP from the container. For postfix this means adding the container IP addresses to /etc/postfix/main.cf as in:
+RosarioSIS will attempt to send mail via the host's port 25. In order for this to work you must set the hostname of the rosariosis container to that of `host` (or some other hostname that your can appear on a legal `FROM` line) and configure the host to accept SMTP from the container. For postfix this means adding the container IP addresses to `/etc/postfix/main.cf` as in:
 
+```
 mynetworks = 192.168.0.0/16 172.16.0.0/12 10.0.0.0/8 127.0.0.0/8 [::ffff:127.0.0.0]/104 [::1]/128
+```