diff --git a/Makefile b/Makefile
index 52057ce5f..08ac5a7f0 100644
--- a/Makefile
+++ b/Makefile
@@ -55,7 +55,7 @@ serve:
 
 vercel:
 	yum install -y jq
-	pip install mkdocs-material mkdocs-minify-plugin
+	pip install mkdocs-material mkdocs-minify-plugin lunr
 	./scripts/get-releases.sh
 	(cd www && mkdocs build)