diff --git a/Makefile b/Makefile
index bf8f35b..65d2391 100644
--- a/Makefile
+++ b/Makefile
@@ -7,7 +7,7 @@ RSYNC = /usr/bin/rsync
 JPEGOPTIM = /usr/bin/jpegoptim
 OPTIPNG = /usr/bin/optipng
 
-.PHONY: all clean server jpegoptim optipng site staging
+.PHONY: all clean server jpegoptim optipng site staging theme
 .SUFFIXES: .jpg .png .md .html .js .css .scss .toml
 
 DIRS = content data static themes/$(THEME) resources
@@ -17,7 +17,9 @@ all: $(DIRS) public/*
 clean: 
 	rm -rf public/ resources/
 
-theme: themes/$(THEME)/package-lock.json themes/$(THEME)/src
+theme: 
+	$(NPM) --prefix="themes/$(THEME)" install --save-dev
+	$(NPM) --prefix="themes/$(THEME)" run build
 
 site: 
 	$(HUGO) --gc