diff --git a/README.md b/README.md
index 313c1b31f..59e5c149a 100644
--- a/README.md
+++ b/README.md
@@ -19,7 +19,7 @@ bl808 Linux
 Ubuntu20.04 needs to use apt to install the package:
 
 ```bash
-sudo apt install flex bison libncurses-dev device-tree-compiler lz4
+sudo apt install flex bison libncurses-dev device-tree-compiler lz4 bc
 ```
 
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