diff --git a/README.md b/README.md
index 6c8f365c..3b8538b9 100644
--- a/README.md
+++ b/README.md
@@ -38,7 +38,7 @@ Latest builds for the engine can be found in the [Actions](https://github.com/Yo
Windows
##### Tested on Windows 10 21H2
-1. Install the [latest version of Haxe](https://haxe.org/download/).
+1. Install [version 4.2.5 of Haxe](https://haxe.org/download/version/4.2.5/).
2. Download [Visual Studio Build Tools](https://aka.ms/vs/17/release/vs_BuildTools.exe)
3. Wait for the Visual Studio Installer to install
4. On the Visual Studio installer screen, go to the "Individual components" tab and only select those options:
@@ -63,7 +63,7 @@ Latest builds for the engine can be found in the [Actions](https://github.com/Yo
Linux
##### Requires testing
-1. Install the [latest version of Haxe](https://haxe.org/download/).
+1. Install [version 4.2.5 of Haxe](https://haxe.org/download/version/4.2.5/).
2. Install `g++`, if not present already.
3. Download and install [`git-scm`](https://git-scm.com/download/linux).
4. Open a terminal in the Codename Engine source folder, and run `update.sh`.
@@ -74,7 +74,7 @@ Latest builds for the engine can be found in the [Actions](https://github.com/Yo
MacOS
##### Requires testing
-1. Install the [latest version of Haxe](https://haxe.org/download/).
+1. Install [version 4.2.5 of Haxe](https://haxe.org/download/version/4.2.5/).
2. Install `Xcode` to allow C++ app building.
3. Download and install [`git-scm`](https://git-scm.com/download/mac).
4. Open a terminal in the Codename Engine source folder, and run `update.sh`.