diff --git a/Practical_b.Rmd b/Practical_b.Rmd
index ac577a641b3d728868025616392fd861a84cd80b..f2daaf8f59b2812752407da7d19957a1a7ef11a8 100644
--- a/Practical_b.Rmd
+++ b/Practical_b.Rmd
@@ -95,6 +95,7 @@ library(factoextra)
 library(igraph)
 library(cccd)
 library(mclust)
+library(umap)
 load(url("https://lbmc.gitbiopages.ens-lyon.fr/hub/formations/ens_m1_ml/practical_b.Rdata"), verbose = T)
 ```