diff --git a/README.md b/README.md
index d8e3449..5738950 100644
--- a/README.md
+++ b/README.md
@@ -33,7 +33,7 @@ newer/compatible versions of the tools and software listed in
 ```
 sudo apt install build-essential bison flex git libssl-dev ninja-build \
     u-boot-tools pandoc libslirp-dev pkg-config libglib2.0-dev libpixman-1-dev \
-    gettext-base curl xterm cmake python3-pip xilinx-bootgen
+    gettext-base curl xterm cmake python3-pip xilinx-bootgen file cpio
 
 pip3 install pykwalify packaging pyelftools
 ```