diff --git a/README.md b/README.md
index d7caacfa..2f5c2b75 100644
--- a/README.md
+++ b/README.md
@@ -22,7 +22,7 @@ Additionally, this project has a [Code of Conduct](CODE_OF_CONDUCT.md), which su
 The Box
 -------
 
-Mail-in-a-Box turns a fresh Ubuntu 14.04 LTS 64-bit machine into a working mail server by installing and configuring various components.
+Mail-in-a-Box turns a fresh Ubuntu 18.04 LTS 64-bit machine into a working mail server by installing and configuring various components.
 
 It is a one-click email appliance. There are no user-configurable setup options. It "just works".
 
@@ -37,7 +37,6 @@ The components installed are:
 It also includes:
 
 * A control panel and API for adding/removing mail users, aliases, custom DNS records, etc. and detailed system monitoring.
-* Our own builds of postgrey (adding better whitelisting) and dovecot-lucene (faster search for mail) distributed via the [Mail-in-a-Box PPA](https://launchpad.net/~mail-in-a-box/+archive/ubuntu/ppa) on Launchpad.
 
 For more information on how Mail-in-a-Box handles your privacy, see the [security details page](security.md).
 
@@ -46,7 +45,7 @@ Installation
 
 See the [setup guide](https://mailinabox.email/guide.html) for detailed, user-friendly instructions.
 
-For experts, start with a completely fresh (really, I mean it) Ubuntu 14.04 LTS 64-bit machine. On the machine...
+For experts, start with a completely fresh (really, I mean it) Ubuntu 18.04 LTS 64-bit machine. On the machine...
 
 Clone this repository:
 
diff --git a/security.md b/security.md
index 5a797673..b8dc35af 100644
--- a/security.md
+++ b/security.md
@@ -1,7 +1,7 @@
 Mail-in-a-Box Security Guide
 ============================
 
-Mail-in-a-Box turns a fresh Ubuntu 14.04 LTS 64-bit machine into a mail server appliance by installing and configuring various components.
+Mail-in-a-Box turns a fresh Ubuntu 18.04 LTS 64-bit machine into a mail server appliance by installing and configuring various components.
 
 This page documents the security features of Mail-in-a-Box. The term “box” is used below to mean a configured Mail-in-a-Box.