diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 1b40a59..12faec9 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -13,7 +13,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        node-version: ['16']
+        node-version: ['16', '18']
 
     steps:
     - name: checkout
diff --git a/build/convert.js b/build/convert.js
index 82e396c..49f7d18 100644
--- a/build/convert.js
+++ b/build/convert.js
@@ -98,6 +98,7 @@ const fetchWeightsOfLines = async () => {
 		const parsed = parse(line.route_short_name)
 		if (parsed.type === 'bus' && (parsed.express || parsed.express))
 			weight += .05
+		// todo: RE vs RB
 
 		const id = line.route_id
 		if (!data[id + '']) data[id + ''] = 0
diff --git a/build/download.sh b/build/download.sh
index 8909606..515681b 100755
--- a/build/download.sh
+++ b/build/download.sh
@@ -5,6 +5,7 @@ set -e
 cd $(dirname $0)
 
 base_url='https://vbb-gtfs.jannisr.de/latest/'
+# todo: use https://gist.github.com/derhuerst/745cf09fe5f3ea2569948dd215bbfe1a ?
 download () {
 	curl -L --compressed --etag-compare "$1.etag" --etag-save "$1.etag" "$base_url$1" -o "$1"
 }
diff --git a/package.json b/package.json
index 6b03d6e..2c955ba 100644
--- a/package.json
+++ b/package.json
@@ -1,7 +1,7 @@
 {
 	"name": "vbb-stations",
 	"description": "A list of VBB stations.",
-	"version": "8.2.0",
+	"version": "8.3.1",
 	"main": "index.js",
 	"files": [
 		"index.js",