diff --git a/GNUmakefile b/GNUmakefile
index e6d2dc3..da43716 100644
--- a/GNUmakefile
+++ b/GNUmakefile
@@ -2,7 +2,7 @@ FILES := $(wildcard *.el)
 
 PACKAGE_TARGETS := $(addprefix package-,$(FILES))
 
-package: $(PACKAGE_TARGETS) package-oni-conf
+package: $(PACKAGE_TARGETS) package-oni-conf package-oni-css
 
 package-%: %
 	emacs --batch \