diff --git a/scripts/upgrade b/scripts/upgrade
index 629fbc8..54d839d 100755
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -91,6 +91,8 @@ then
 	# Download, check integrity, uncompress and patch the source from app.src
 	ynh_setup_source --dest_dir="$final_path"
 
+	ynh_install_composer --phpversion="$phpversion" --workdir="$final_path"
+
 	#Copy the admin saved settings from tmp directory to final path	
 	cp -a "$tmpdir" "$final_path/config"