diff --git a/README.md b/README.md
index 9e179a2..4b45708 100644
--- a/README.md
+++ b/README.md
@@ -20,7 +20,7 @@ Getting Started
 1. Install dependencies.
 
     ```
-    $ sudo apt install build-essential libncurses5-dev gcc-arm-linux-gnueabi
+    $ sudo apt install build-essential bison flex libncurses5-dev gcc-arm-linux-gnueabi
     ```
 
 1. Clone this repository with recursive clone enabled.