1 files changed, 2 insertions, 2 deletions

diff --git a/RELEASE b/RELEASE
index c9c5a67..84cf783 100644
--- a/RELEASE
+++ b/RELEASE
@@ -17,10 +17,10 @@ push the tag
     git push --tags
 
 archive's creation :
-    git archive --format=tar.gz --prefix=mat-$VERSION/ $VERSION > mat-$VERSION.tar.gz
+    git archive --format=tar.xz --prefix=mat-$VERSION/ $VERSION > mat-$VERSION.tar.xz
 
 signing:
-    gpg --armor --detach-sign mat-$VERSION.tar.gz
+    gpg --armor --detach-sign mat-$VERSION.tar.xz
 
 upload:
     https://mat.boum.org/files