diff --git a/README.md b/README.md
index 3378033..9e1def7 100644
--- a/README.md
+++ b/README.md
@@ -106,7 +106,7 @@ To allow coexistence with the original tool, our version will be compiled and in
 ```bash
 git clone https://github.com/Token2/fido2-manage.git
 
-sudo pacman -S libfido2 cmake libcbor tk
+sudo pacman -S libfido2 cmake libcbor tk python-pexpect
 
 cd fido2-manage