Docs: Change to server upgrade page to reflect PG 9.4 minimum version

Signed-off-by: Ben Shum <ben@evergreener.net>

diff --git a/docs/installation/server_upgrade.txt b/docs/installation/server_upgrade.txt
index 15efede..0fb5da2 100644 (file)
--- a/docs/installation/server_upgrade.txt
+++ b/docs/installation/server_upgrade.txt
@@ -6,7 +6,8 @@ All of the steps in this chapter are to be completed from the command line.
 Software Prerequisites
 ~~~~~~~~~~~~~~~~~~~~~~
 
- * **PostgreSQL**: The minimum supported version is 9.3.
+  * **PostgreSQL**: Version 9.4 is recommended.
+    The minimum supported version is 9.3.
   * **Linux**: Evergreen 2.12-beta has been tested on Debian Jessie (8.0),
     Debian Wheezy (7.0), Ubuntu Xenial Xerus (16.04), Ubuntu Trusty Tahr (14.04),
     and Fedora.