diff --git a/README b/README
index 2b8ccdf..e7d1db1 100644
--- a/README
+++ b/README
@@ -10,4 +10,14 @@ Requirements
 * sdl2
 * sdl2-ttf
 * fontconfig
-* Liberation Mono fonts
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+* Liberation Mono fonts
+
+Build requirements
+==================
+* autoconf
+* automake
+* pkg-config
+
+If you run GNU Guix, please use the following package scheme in the URL below:
+
+   https://forge.chapril.org/pradana.aumars/pong/raw/branch/master/pong.scm
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