diff --git a/CHANGELOG b/CHANGELOG
index f5618ba..5894c7c 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -2,7 +2,8 @@ Version 0.8.3 (2020-??-??)
 ==========================
 
 Changes:
-- Officially require PHP 7.1 (effectively required since version 0.8.0)
+- Officially require PHP 7.1 (accidentally required since version 0.8.0)
+- Various internal changes pursuant to use of PHP 7.1
 
 Version 0.8.2 (2019-12-07)
 ==========================
diff --git a/UPGRADING b/UPGRADING
index a78867b..42687d7 100644
--- a/UPGRADING
+++ b/UPGRADING
@@ -11,6 +11,20 @@ usually prudent:
   `composer install -o --no-dev`
 
 
+Upgrading from 0.8.2 to 0.8.3
+=============================
+
+- PHP 7.1 is now required
+- The following Composer dependencies have been added:
+    - nicolus/picofeed
+    - laminas/laminas-diactoros
+    - laminas/laminas-httphandlerrunner
+- The following Composer dependencies have been removed:
+    - p3k/picofeed
+    - zendframework/zend-diactoros
+    - zendframework/zend-httphandlerrunner
+    
+
 Upgrading from 0.8.1 to 0.8.2
 =============================
 
diff --git a/docs/en/020_Getting_Started/010_Requirements.md b/docs/en/020_Getting_Started/010_Requirements.md
index f781869..7b3b6ef 100644
--- a/docs/en/020_Getting_Started/010_Requirements.md
+++ b/docs/en/020_Getting_Started/010_Requirements.md
@@ -8,6 +8,7 @@ The Arsse has the following requirements:
         - [sqlite3](http://php.net/manual/en/book.sqlite3.php) or [pdo_sqlite](http://php.net/manual/en/ref.pdo-sqlite.php) for SQLite databases
         - [pgsql](http://php.net/manual/en/book.pgsql.php) or [pdo_pgsql](http://php.net/manual/en/ref.pdo-pgsql.php) for PostgreSQL 10 or later databases
         - [mysqli](http://php.net/manual/en/book.mysqli.php) or [pdo_mysql](http://php.net/manual/en/ref.pdo-mysql.php) for MySQL/Percona 8.0.11 or later databases
+    - [curl](http://php.net/manual/en/book.curl.php) (optional)
 - Privileges either to create and run systemd services, or to run cron jobs
 
 Instructions for how to satisfy the PHP extension requirements for Debian systems are included in the next section.