diff --git a/README.md b/README.md
index 2ec129b..50ec4a4 100644
--- a/README.md
+++ b/README.md
@@ -44,7 +44,7 @@ If the configuration passes, restart Nginx:
 
 ### PHP configuration
 
-The php-fpm pool configuration is located in `global/php-pool.conf` and defaults to PHP 7.4. It will need modifying if you want the default php-fpm pool service to be a different PHP version. Additional PHP version upstream definitions can be added to the `/upstreams` folder (a PHP 7.3 sample is provided there). You can either use the default pool using `$upstream` in your nginx configurations or the specific upstream definition (i.e. php73, php72) setup by your custom upstream definitions.
+The php-fpm pool configuration is located in `global/php-pool.conf` and defaults to PHP 7.4. It will need modifying if you want the default php-fpm pool service to be a different PHP version. Additional PHP version upstream definitions can be added to the `/upstreams` folder (a PHP 8.3 sample is provided there). You can either use the default pool using `$upstream` in your nginx configurations or the specific upstream definition (i.e. php83, php82) setup by your custom upstream definitions.
 
 For example, currently the nginx configuration for `single-site.com` has the following set for php requests:
 
@@ -52,10 +52,10 @@ For example, currently the nginx configuration for `single-site.com` has the fol
 fastcgi_pass    $upstream
 ```
 
-You could change that to the following to use the php 7.3 PHP service instead (assuming that php7.3-fpm service is running).
+You could change that to the following to use the php 8.3 PHP service instead (assuming that php8.3-fpm service is running).
 
 ```
-fastcgi_pass    php73
+fastcgi_pass    php83
 ```
 
 This effectively allows you to have different server blocks execute different versions of PHP if needed.
diff --git a/global/php-pool.conf b/global/php-pool.conf
index 24203bf..385ae67 100644
--- a/global/php-pool.conf
+++ b/global/php-pool.conf
@@ -1,12 +1,12 @@
 # Upstream to abstract backend connection(s) for PHP.
 # Additional upstreams can be added to /etc/nginx/upstreams/*.conf and then you just
-# change `default php74` to whatever the new upstream is (could be php73 for example).
-upstream php74 {
-	server unix:/run/php/php7.4-fpm.sock;
+# change `default php74` to whatever the new upstream is (could be php83 for example).
+upstream php83 {
+	server unix:/run/php/php8.3-fpm.sock;
 }
 
 include /etc/nginx/upstreams/*.conf;
 
 map '' $upstream {
-	default php74;
+	default php83;
 }
\ No newline at end of file
diff --git a/upstreams/php73.conf b/upstreams/php73.conf
deleted file mode 100644
index ced6897..0000000
--- a/upstreams/php73.conf
+++ /dev/null
@@ -1,4 +0,0 @@
-# Defines the upstream for PHP 7.3
-upstream php73 {
-	server unix:/run/php/php7.3-fpm.sock;
-}
\ No newline at end of file
diff --git a/upstreams/php83.conf b/upstreams/php83.conf
new file mode 100644
index 0000000..fd97caf
--- /dev/null
+++ b/upstreams/php83.conf
@@ -0,0 +1,4 @@
+# Defines the upstream for PHP 8.3
+upstream php83 {
+	server unix:/run/php/php8.3-fpm.sock;
+}
\ No newline at end of file