diff --git a/README.md b/README.md
index b7c39c23..9c72f423 100755
--- a/README.md
+++ b/README.md
@@ -1,11 +1,17 @@
 **System requirements:**
 - 2.4 GHz CPU or faster (multi-core recommended)
 - Windows 7, 8 or 10
-- Graphics card with Pixel Shader model 2.0 support
+- Graphics card with OpenGL 3.2 support
 
-**Required software:**
+**Required software on Windows:**
 - [Microsoft .Net Framework 4.7.2](https://dotnet.microsoft.com/download/dotnet-framework/net472)
 
+**Building on Linux:**
+- Install mono. On debian based distros `apt-get install mono` should do the trick
+- Install gcc
+- Type `make`. If you get an error about it not finding `msbuild` then you are most likely missing a package, or your version of mono may be too old
+- Run it by launching `builder` from inside the Build folder
+
 **Links:**
 - [Official thread link](https://forum.zdoom.org/viewtopic.php?f=232&t=66745)
 - [Git builds at DRDTeam.org](https://devbuilds.drdteam.org/ultimatedoombuilder/)