diff --git a/index.md b/index.md
index 8ad6140740529bceb24a1ad4b2b2a196d7de0706..1042be355ffbb88589cca570c71ed77d46a91e99 100644
--- a/index.md
+++ b/index.md
@@ -52,6 +52,8 @@ Chaîne *BBB* du cours <https://bbb.hesge.ch/b/ore-xff-hkz-poh>
 
 ## Exercices
 
+### 23.05.2023: Barbes euh... B-arbres, [HTML](https://malaspinas.academy/prog_seq_c_tp/b_arbres/index.html), [PDF](https://malaspinas.academy/prog_seq_c_tp/b_arbres/b_arbres.pdf), [GIT](https://gitedu.hesge.ch/programmation_sequentielle/travaux_pratiques/c_lang/b_arbres/enonce)
+
 ### 16.05.2023: Classification, [HTML](https://malaspinas.academy/prog_seq_c_tp/classification/index.html), [PDF](https://malaspinas.academy/prog_seq_c_tp/classification/classification.pdf), [GIT](https://gitedu.hesge.ch/programmation_sequentielle/travaux_pratiques/c_lang/classification/enonce)
 
 ### 02.05.2023: Arbres quaternaires, [HTML](https://malaspinas.academy/prog_seq_c_tp/quadtree/index.html), [PDF](https://malaspinas.academy/prog_seq_c_tp/quadtree/quadtree.pdf), [GIT](https://gitedu.hesge.ch/programmation_sequentielle/travaux_pratiques/c_lang/quadtree/enonce), [BUZZ](https://malaspinas.academy/prog_seq_c_tp/quadtree/buzz.pgm)