diff --git a/Makefile b/Makefile
index 83fb171..9221d74 100644
--- a/Makefile
+++ b/Makefile
@@ -17,6 +17,7 @@ package: $(PACKAGES)
 npm:
 	cd slt; npm i
 	cd slt; npm run sass
+	cd slt; npm run prettier && npm run stylelint
 
 .PHONY: slt.tar.gz
 slt.tar.gz: npm slt/templateDetails.xml