diff --git a/BUILDING.md b/BUILDING.md
index e5338066e..1c5aa8e59 100644
--- a/BUILDING.md
+++ b/BUILDING.md
@@ -2,7 +2,7 @@
 ## Pre-requisites
 - A bash shell (git bash is sufficient for Windows)
 - [`git`](https://git-scm.com) available in your shell
-- PHP 7.3 or newer available in your shell
+- PHP 7.4 or newer available in your shell
 - [`composer`](https://getcomposer.org) available in your shell
 
 ## Custom PHP binaries