diff --git a/pkgs/development/node-packages/node-packages.json b/pkgs/development/node-packages/node-packages.json
index 22c53d348825..d71d1a230c19 100644
--- a/pkgs/development/node-packages/node-packages.json
+++ b/pkgs/development/node-packages/node-packages.json
@@ -232,6 +232,7 @@
 , "rimraf"
 , "rollup"
 , { "rust-analyzer-build-deps": "../../misc/vscode-extensions/rust-analyzer/build-deps" }
+, "rtlcss"
 , "s3http"
 , "sass"
 , "semver"