diff --git a/2_developpement.md b/2_developpement.md
index 923bf18..2028461 100644
--- a/2_developpement.md
+++ b/2_developpement.md
@@ -10,7 +10,7 @@ pacman -S git mercurial
 graphic tools
 -------------
 ```
-pacman -S tk tig meld doxygen graphviz ctags
+pacman -S tk tig meld doxygen graphviz ctags xdot
 ```
 
 python
@@ -22,7 +22,7 @@ pacman -S python-pip python2-pip
 Builder
 -------
 ```
-pacman -S clang gcc cmake
+pacman -S clang gcc cmake mingw-w64-gcc
 pip install lutin --user
 pip install pillow --user
 ```