diff --git a/tp3/README.md b/tp3/README.md
index 852c5df98c8dad64056c0867a276ae56feeac38c..674fbd6896fdc4355ab811800d303f497a4a3007 100644
--- a/tp3/README.md
+++ b/tp3/README.md
@@ -358,6 +358,8 @@ where
 # 3. Long exercise proposal
 
 ```rs
+use std::io::{BufRead, BufReader, BufWriter, Read, Write};
+
 trait Game {
     type Move;
     type Player: std::fmt::Debug;