diff --git a/README.md b/README.md
index 2996937..d7e39e7 100644
--- a/README.md
+++ b/README.md
@@ -16,6 +16,7 @@ Features
 Dependencies
 ------------
 
+* POSIX make (build time)
 * POSIX utilities
 * POSIX shell
 * `switch_root`