diff --git a/.github/workflows/docker-image.yml b/.github/workflows/docker-image.yml
index 16ab16f..6136670 100644
--- a/.github/workflows/docker-image.yml
+++ b/.github/workflows/docker-image.yml
@@ -2,7 +2,7 @@ name: build & publish Docker image
 on:
   push:
     branches:
-      - 5
+      - 6
 jobs:
   lint-test:
     name: lint & test
@@ -35,7 +35,7 @@ jobs:
         with:
           push: true
           tags: |
-            derhuerst/db-rest:5
+            derhuerst/db-rest:6
             derhuerst/db-rest:latest
 
       # this is for the public-transport/infrastructure cluster
@@ -55,4 +55,4 @@ jobs:
         uses: docker/build-push-action@v2
         with:
           push: true
-          tags: ghcr.io/${{github.repository}}:v5_${{steps.hash.outputs.hash}}_${{steps.datetime.outputs.datetime}}
+          tags: ghcr.io/${{github.repository}}:v6_${{steps.hash.outputs.hash}}_${{steps.datetime.outputs.datetime}}
diff --git a/Dockerfile b/Dockerfile
index 23f8677..6f1d96c 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -16,9 +16,9 @@ FROM node:alpine
 LABEL org.opencontainers.image.title="db-rest"
 LABEL org.opencontainers.image.description="A clean REST API wrapping around the Deutsche Bahn API."
 LABEL org.opencontainers.image.authors="Jannis R <mail@jannisr.de>"
-LABEL org.opencontainers.image.documentation="https://github.com/derhuerst/db-rest/tree/5"
+LABEL org.opencontainers.image.documentation="https://github.com/derhuerst/db-rest/tree/6"
 LABEL org.opencontainers.image.source="https://github.com/derhuerst/db-rest"
-LABEL org.opencontainers.image.revision="5"
+LABEL org.opencontainers.image.revision="6"
 LABEL org.opencontainers.image.licenses="ISC"
 WORKDIR /app
 
@@ -32,7 +32,7 @@ COPY --from=builder /app/docs ./docs
 
 EXPOSE 3000
 
-ENV HOSTNAME v5.db.transport.rest
+ENV HOSTNAME v6.db.transport.rest
 ENV PORT 3000
 
 CMD ["node", "index.js"]
diff --git a/api-docs.js b/api-docs.js
index 52a4990..4743771 100644
--- a/api-docs.js
+++ b/api-docs.js
@@ -4,13 +4,13 @@ const generateApiDocs = require('hafas-rest-api/tools/generate-docs')
 const {api} = require('./api')
 
 const HEAD = `\
-# \`v5.db.transport.rest\` API documentation
+# \`v6.db.transport.rest\` API documentation
 
-[\`v5.db.transport.rest\`](https://v5.db.transport.rest/) is a [REST API](https://restfulapi.net). Data is being returned as [JSON](https://www.json.org/).
+[\`v6.db.transport.rest\`](https://v6.db.transport.rest/) is a [REST API](https://restfulapi.net). Data is being returned as [JSON](https://www.json.org/).
 
 You can just use the API without authentication. There's a [rate limit](https://apisyouwonthate.com/blog/what-is-api-rate-limiting-all-about) of 100 request/minute (burst 200 requests/minute) set up.
 
-[OpenAPI playground](https://petstore.swagger.io/?url=https%3A%2F%2Fv5.db.transport.rest%2F.well-known%2Fservice-desc%0A)
+[OpenAPI playground](https://petstore.swagger.io/?url=https%3A%2F%2Fv6.db.transport.rest%2F.well-known%2Fservice-desc%0A)
 
 *Note:* The examples snippets in this documentation uses the \`url-encode\` CLI tool of the [\`url-decode-encode-cli\` package](https://www.npmjs.com/package/url-decode-encode-cli) for [URL-encoding](https://de.wikipedia.org/wiki/URL-Encoding).
 `
@@ -92,7 +92,7 @@ const examples = {
 ### Example
 
 \`\`\`shell
-curl 'https://v5.db.transport.rest/locations?query=halle&results=1' -s | jq
+curl 'https://v6.db.transport.rest/locations?query=halle&results=1' -s | jq
 \`\`\`
 
 \`\`\`js
@@ -120,7 +120,7 @@ curl 'https://v5.db.transport.rest/locations?query=halle&results=1' -s | jq
 ### Example
 
 \`\`\`shell
-curl 'https://v5.db.transport.rest/stops/nearby?latitude=53.5711&longitude=10.0015' -s | jq
+curl 'https://v6.db.transport.rest/stops/nearby?latitude=53.5711&longitude=10.0015' -s | jq
 \`\`\`
 
 \`\`\`js
@@ -160,7 +160,7 @@ curl 'https://v5.db.transport.rest/stops/nearby?latitude=53.5711&longitude=10.00
 ### Example
 
 \`\`\`shell
-curl 'https://v5.db.transport.rest/stops/reachable-from?latitude=53.553766&longitude=9.977514&address=Hamburg,+Holstenwall+9' -s | jq
+curl 'https://v6.db.transport.rest/stops/reachable-from?latitude=53.553766&longitude=9.977514&address=Hamburg,+Holstenwall+9' -s | jq
 \`\`\`
 
 \`\`\`js
@@ -200,7 +200,7 @@ curl 'https://v5.db.transport.rest/stops/reachable-from?latitude=53.553766&longi
 ### Example
 
 \`\`\`shell
-curl 'https://v5.db.transport.rest/stops/8010159' -s | jq
+curl 'https://v6.db.transport.rest/stops/8010159' -s | jq
 \`\`\`
 
 \`\`\`js
@@ -229,7 +229,7 @@ curl 'https://v5.db.transport.rest/stops/8010159' -s | jq
 
 \`\`\`shell
 # autocomplete using db-stations-autocomplete
-curl 'https://v5.db.transport.rest/stations?query=dammt' -s | jq
+curl 'https://v6.db.transport.rest/stations?query=dammt' -s | jq
 \`\`\`
 
 \`\`\`js
@@ -265,7 +265,7 @@ curl 'https://v5.db.transport.rest/stations?query=dammt' -s | jq
 
 \`\`\`shell
 # filter db-stations by \`hasParking\` property
-curl 'https://v5.db.transport.rest/stations?hasParking=true' -s | jq
+curl 'https://v6.db.transport.rest/stations?hasParking=true' -s | jq
 \`\`\`
 
 \`\`\`js
@@ -287,7 +287,7 @@ curl 'https://v5.db.transport.rest/stations?hasParking=true' -s | jq
 
 \`\`\`shell
 # filter db-stations by \`hasDBLounge\` property, get newline-delimited JSON
-curl 'https://v5.db.transport.rest/stations?hasDBLounge=true' -H 'accept: application/x-ndjson' -s | jq
+curl 'https://v6.db.transport.rest/stations?hasDBLounge=true' -H 'accept: application/x-ndjson' -s | jq
 \`\`\`
 `,
 	'/stations/:id': `\
@@ -295,9 +295,9 @@ curl 'https://v5.db.transport.rest/stations?hasDBLounge=true' -H 'accept: applic
 
 \`\`\`shell
 # lookup Halle (Saale) Hbf
-curl 'https://v5.db.transport.rest/stations/8010159' -s | jq
-curl 'https://v5.db.transport.rest/stations/LH' -s | jq # RIL100/DS100
-curl 'https://v5.db.transport.rest/stations/LHG' -s | jq # RIL100/DS100
+curl 'https://v6.db.transport.rest/stations/8010159' -s | jq
+curl 'https://v6.db.transport.rest/stations/LH' -s | jq # RIL100/DS100
+curl 'https://v6.db.transport.rest/stations/LHG' -s | jq # RIL100/DS100
 \`\`\`
 
 \`\`\`js
@@ -328,7 +328,7 @@ curl 'https://v5.db.transport.rest/stations/LHG' -s | jq # RIL100/DS100
 
 \`\`\`shell
 # at Halle (Saale) Hbf, in direction Berlin Südkreuz
-curl 'https://v5.db.transport.rest/stops/8010159/departures?direction=8011113&duration=120' -s | jq
+curl 'https://v6.db.transport.rest/stops/8010159/departures?direction=8011113&duration=120' -s | jq
 \`\`\`
 
 \`\`\`js
@@ -370,7 +370,7 @@ curl 'https://v5.db.transport.rest/stops/8010159/departures?direction=8011113&du
 
 \`\`\`shell
 # at Halle (Saale) Hbf, 10 minutes
-curl 'https://v5.db.transport.rest/stops/8010159/arrivals?duration=10' -s | jq
+curl 'https://v6.db.transport.rest/stops/8010159/arrivals?duration=10' -s | jq
 \`\`\`
 `,
 	'/journeys': `\
@@ -378,9 +378,9 @@ curl 'https://v5.db.transport.rest/stops/8010159/arrivals?duration=10' -s | jq
 
 \`\`\`shell
 # stop/station to POI
-curl 'https://v5.db.transport.rest/journeys?from=8010159&to.id=991561765&to.latitude=51.483641&to.longitude=11.980841' -s | jq
+curl 'https://v6.db.transport.rest/journeys?from=8010159&to.id=991561765&to.latitude=51.483641&to.longitude=11.980841' -s | jq
 # without buses, with ticket info
-curl 'https://v5.db.transport.rest/journeys?from=…&to=…&bus=false&tickets=true' -s | jq
+curl 'https://v6.db.transport.rest/journeys?from=…&to=…&bus=false&tickets=true' -s | jq
 \`\`\`
 `,
 	'/journeys/:ref': `\
@@ -388,11 +388,11 @@ curl 'https://v5.db.transport.rest/journeys?from=…&to=…&bus=false&tickets=tr
 
 \`\`\`shell
 # get the refreshToken of a journey
-journey=$(curl 'https://v5.db.transport.rest/journeys?from=…&to=…&results=1' -s | jq '.journeys[0]')
+journey=$(curl 'https://v6.db.transport.rest/journeys?from=…&to=…&results=1' -s | jq '.journeys[0]')
 refresh_token=$(echo $journey | jq -r '.refreshToken')
 
 # refresh the journey
-curl "https://v5.db.transport.rest/journeys/$(echo $refresh_token | url-encode)" -s | jq
+curl "https://v6.db.transport.rest/journeys/$(echo $refresh_token | url-encode)" -s | jq
 \`\`\`
 `,
 	'/trips/:id': `\
@@ -400,12 +400,12 @@ curl "https://v5.db.transport.rest/journeys/$(echo $refresh_token | url-encode)"
 
 \`\`\`shell
 # get the trip ID of a journey leg
-journey=$(curl 'https://v5.db.transport.rest/journeys?from=…&to=…&results=1' -s | jq '.journeys[0]')
+journey=$(curl 'https://v6.db.transport.rest/journeys?from=…&to=…&results=1' -s | jq '.journeys[0]')
 journey_leg=$(echo $journey | jq -r '.legs[0]')
 trip_id=$(echo $journey_leg | jq -r '.tripId')
 
 # fetch the trip
-curl "https://v5.db.transport.rest/trips/$(echo $trip_id | url-encode)" -s | jq
+curl "https://v6.db.transport.rest/trips/$(echo $trip_id | url-encode)" -s | jq
 \`\`\`
 `,
 	'/radar': `\
@@ -413,7 +413,7 @@ curl "https://v5.db.transport.rest/trips/$(echo $trip_id | url-encode)" -s | jq
 
 \`\`\`shell
 bbox='north=53.555&west=9.989&south=53.55&east=10.001'
-curl "https://v5.db.transport.rest/radar?$bbox&results=10" -s | jq
+curl "https://v6.db.transport.rest/radar?$bbox&results=10" -s | jq
 \`\`\`
 `,
 }
diff --git a/api.js b/api.js
index c9b2af9..19a51fe 100644
--- a/api.js
+++ b/api.js
@@ -70,7 +70,7 @@ const config = {
 	description: pkg.description,
 	homepage: pkg.homepage,
 	version: pkg.version,
-	docsLink: 'https://github.com/derhuerst/db-rest/blob/5/docs/readme.md',
+	docsLink: 'https://github.com/derhuerst/db-rest/blob/6/docs/readme.md',
 	openapiSpec: true,
 	logging: true,
 	aboutPage: false,
diff --git a/architecture.svg b/architecture.svg
index 526cfd6..4d66e47 100644
--- a/architecture.svg
+++ b/architecture.svg
@@ -42,7 +42,7 @@
 		<rect class="box" x="0" y="0" width="100" height="41" />
 		<text class="monospace-text" x="26.2" y="13">db-rest</text>
 		<text class="normal-text small-text" x="4" y="26">deployed at</text>
-		<text class="monospace-text small-text" x="4" y="36">v5.db.transport.rest</text>
+		<text class="monospace-text small-text" x="4" y="36">v6.db.transport.rest</text>
 	</g>
 	<g transform="translate(269, 14)">
 		<path class="arrow" d="M0,14 L50,14" />
diff --git a/docs/getting-started.md b/docs/getting-started.md
index c3e545e..fa3daaf 100644
--- a/docs/getting-started.md
+++ b/docs/getting-started.md
@@ -1,4 +1,4 @@
-# Getting Started with `v5.db.transport.rest`
+# Getting Started with `v6.db.transport.rest`
 
 Let's walk through the **requests that are necessary to implement a typical basic transit app**.
 
@@ -11,7 +11,7 @@ The following code snippets use [`curl`](https://curl.haxx.se) (a versatile comm
 The `/locations?query=…` route allows you to query stops, points of interest (POIs) & addresses. We're only interested in stops though, so we filter using `poi=false&addresses=false`:
 
 ```shell
-curl 'https://v5.db.transport.rest/locations?poi=false&addresses=false&query=südkreuz' -s | jq
+curl 'https://v6.db.transport.rest/locations?poi=false&addresses=false&query=südkreuz' -s | jq
 ```
 
 ```js
@@ -78,7 +78,7 @@ curl 'https://v5.db.transport.rest/locations?poi=false&addresses=false&query=sü
 Let's fetch 5 of the next departures at *Berlin Südkreuz* (which has the ID `8011113`):
 
 ```shell
-curl 'https://v5.db.transport.rest/stops/8011113/departures?results=5' -s | jq
+curl 'https://v6.db.transport.rest/stops/8011113/departures?results=5' -s | jq
 ```
 
 ```js
@@ -160,7 +160,7 @@ We call a connection from A to B – at a specific date & time, made up of secti
 Let's fetch 2 journeys from `8011113` (*Berlin Südkreuz*) to `8010159` (*Halle (Saale)Hbf*), departing tomorrow at 2pm (at the time of writing this).
 
 ```shell
-curl 'https://v5.db.transport.rest/journeys?from=8011113&to=8010159&departure=tomorrow+2pm&results=2' -s | jq
+curl 'https://v6.db.transport.rest/journeys?from=8011113&to=8010159&departure=tomorrow+2pm&results=2' -s | jq
 ```
 
 ```js
@@ -316,4 +316,4 @@ Note that `departure` includes the `departureDelay`, and `arrival` includes the
 
 ### 4. more features
 
-These are the basics. Check the full [API docs](api.md) for all features or use the [OpenAPI playground](https://petstore.swagger.io/?url=https%3A%2F%2Fv5.db.transport.rest%2F.well-known%2Fservice-desc%0A) or explore the API!
+These are the basics. Check the full [API docs](api.md) for all features or use the [OpenAPI playground](https://petstore.swagger.io/?url=https%3A%2F%2Fv6.db.transport.rest%2F.well-known%2Fservice-desc%0A) or explore the API!
diff --git a/docs/readme.md b/docs/readme.md
index b664e81..d331f8b 100644
--- a/docs/readme.md
+++ b/docs/readme.md
@@ -1,6 +1,6 @@
-# `v5.db.transport.rest` documentation
+# `v6.db.transport.rest` documentation
 
-[`v5.db.transport.rest`](https://v5.db.transport.rest/) is a [REST API](https://restfulapi.net) for the public transportation system in Germany.
+[`v6.db.transport.rest`](https://v6.db.transport.rest/) is a [REST API](https://restfulapi.net) for the public transportation system in Germany.
 
 [![API status](https://badgen.net/uptime-robot/status/m784879516-8a977fa91b975fc3884a9857)](https://stats.uptimerobot.com/57wNLs39M/784879516)
 
@@ -8,7 +8,7 @@ Because it wraps [an API](https://github.com/public-transport/hafas-client/blob/
 
 - [Getting Started](getting-started.md)
 - [API documentation](api.md)
-- [OpenAPI playground](https://petstore.swagger.io/?url=https%3A%2F%2Fv5.db.transport.rest%2F.well-known%2Fservice-desc%0A)
+- [OpenAPI playground](https://petstore.swagger.io/?url=https%3A%2F%2Fv6.db.transport.rest%2F.well-known%2Fservice-desc%0A)
 
 ## Why use this API?
 
diff --git a/package.json b/package.json
index ded86c6..227863a 100644
--- a/package.json
+++ b/package.json
@@ -5,7 +5,7 @@
 	"version": "5.0.2",
 	"main": "index.js",
 	"author": "Jannis R <mail@jannisr.de>",
-	"homepage": "https://github.com/derhuerst/db-rest/tree/5",
+	"homepage": "https://github.com/derhuerst/db-rest/tree/6",
 	"repository": "derhuerst/db-rest",
 	"bugs": "https://github.com/derhuerst/db-rest/issues",
 	"license": "ISC",
diff --git a/readme.md b/readme.md
index e9b5cc0..928d0a4 100644
--- a/readme.md
+++ b/readme.md
@@ -1,12 +1,12 @@
 # db-rest
 
-**A clean REST API wrapping around the [Deutsche Bahn HAFAS API](https://github.com/public-transport/db-hafas#db-hafas).** It is deployed at [`v5.db.transport.rest`](https://v5.db.transport.rest/).
+**A clean REST API wrapping around the [Deutsche Bahn HAFAS API](https://github.com/public-transport/db-hafas#db-hafas).** It is deployed at [`v6.db.transport.rest`](https://v6.db.transport.rest/).
 
 [**API Documentation**](docs/readme.md)
 
 ![db-rest architecture diagram](architecture.svg)
 
-[![API status](https://badgen.net/uptime-robot/status/m784879516-8a977fa91b975fc3884a9857)](https://stats.uptimerobot.com/57wNLs39M/784879516)
+[![API status](https://badgen.net/uptime-robot/status/m793274556-25c5e9bbab0297d91cda7134)](https://stats.uptimerobot.com/57wNLs39M/793274556)
 [![dependency status](https://img.shields.io/david/derhuerst/db-rest.svg)](https://david-dm.org/derhuerst/db-rest)
 ![ISC-licensed](https://img.shields.io/github/license/derhuerst/db-rest.svg)
 [![support me via GitHub Sponsors](https://img.shields.io/badge/support%20me-donate-fa7664.svg)](https://github.com/sponsors/derhuerst)
@@ -19,10 +19,10 @@
 
 ### via Docker
 
-A Docker image [is available as `derhuerst/db-rest:5`](https://hub.docker.com/r/derhuerst/db-rest:5).
+A Docker image [is available as `derhuerst/db-rest:6`](https://hub.docker.com/r/derhuerst/db-rest:6).
 
 ```shell
-docker run -d -p 3000:3000 derhuerst/db-rest:5
+docker run -d -p 3000:3000 derhuerst/db-rest:6
 ```
 
 *Note:* The Docker image does not contain the Redis server.
@@ -32,7 +32,7 @@ docker run -d -p 3000:3000 derhuerst/db-rest:5
 ```shell
 git clone https://github.com/derhuerst/db-rest.git
 cd db-rest
-git checkout 5
+git checkout 6
 npm install --production
 
 redis-server &