1 files changed, 1 insertions, 1 deletions

diff --git a/Makefile b/Makefile
index 13afc14..c91ddfb 100644
--- a/Makefile
+++ b/Makefile
@@ -145,7 +145,7 @@ vendor: composer.json composer.lock
 # Install JS dependencies.
 node_modules: package.json package-lock.json
 	@echo Installing JS dependencies...
-	npm install --loglevel=error
+	npm install --loglevel=error --also=dev
 
 # Clean files generated by `make all`.
 .PHONY: clean