diff --git a/scripts/_common.sh b/scripts/_common.sh
index de26b54..17144b9 100644
--- a/scripts/_common.sh
+++ b/scripts/_common.sh
@@ -95,6 +95,7 @@ init_composer() {
     || ynh_die "Unable to install Composer"
 
   # update dependencies to create composer.lock
+  exec_composer "$DESTDIR" self-update
   exec_composer "$DESTDIR" update symfony/flex --no-plugins
   exec_composer "$DESTDIR" install  --no-dev --optimize-autoloader  \
     || ynh_die "Unable to update Kimai2 core dependencies"