diff --git a/Nginx/Server Blocks/book.libraryofcode.org.conf b/Nginx/Server Blocks/book.libraryofcode.org.conf
index 5b55c57..d177211 100644
--- a/Nginx/Server Blocks/book.libraryofcode.org.conf	
+++ b/Nginx/Server Blocks/book.libraryofcode.org.conf	
@@ -13,7 +13,7 @@ server {
 
     location ~ \.php$ {
         include snippets/fastcgi-php.conf;
-        fastcgi_pass unix:/run/php/php7.4-fpm.sock;
+        fastcgi_pass unix:/run/php/php7.3-fpm.sock;
         fastcgi_param HTACCESS on;
         proxy_read_timeout 800;
     }