diff --git a/README.md b/README.md
index c07c453..0cff616 100644
--- a/README.md
+++ b/README.md
@@ -19,7 +19,8 @@ sudo apt install belenios-tool
 #### Installation des dépendances
 
 ```
-sudo apt install opam
+sudo apt install opam libgmp-dev pkg-config
+
 opam init
 opam install calendar eliom csv
 ```