diff --git a/build-aux/main.mk b/build-aux/main.mk
index aa27fe4fcf8..cc04f9a0f7e 100644
--- a/build-aux/main.mk
+++ b/build-aux/main.mk
@@ -130,6 +130,7 @@ endif
 	}
 	$(tools/chart-doc-gen) -d $</doc.yaml -t $</readme.tpl -v $@/values.yaml >$@/README.md
 build-output/chart-%.tgz: build-output/chart-%.d
+	cd $< && helm dependency build
 	helm package --destination=$< $<
 	mv $</emissary-ingress-$(word 2,$(subst _, ,$*)).tgz $@