diff --git a/.circleci/config.yml b/.circleci/config.yml
index 15248346a..d5e92c928 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -431,17 +431,13 @@ jobs:
                     mkdir -p ~/.ssh
                     touch ~/.ssh/known_hosts
                     echo "github.com ssh-rsa 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" >> ~/.ssh/known_hosts
-                    git clone git@github.com:urbica/martin.git ~/martin
-                    git config advice.detachedHead false
-                    git checkout ed14582a8f5c3e11bfb165f3b012edccd929b479
-                name: Checkout
+                    git config --global advice.detachedHead false
+                    git clone --depth 1 --branch v0.13.0 git@github.com:maplibre/martin.git ~/martin
+                name: Clone martin
             - restore_cache:
                 keys:
                     - v1-cargo-{{ checksum "Cargo.toml" }}-{{ checksum "Cargo.lock" }}
             - prepare_workspace
-            - run:
-                command: cargo update openssl --precise 0.10.64
-                name: Update OpenSSL library due to failed compilation
             - run:
                 command: |
                     cargo build --release --target x86_64-unknown-linux-gnu
diff --git a/.circleci/src/jobs/build_martin.yml b/.circleci/src/jobs/build_martin.yml
index 7cfa8cfd7..a33fae7b3 100644
--- a/.circleci/src/jobs/build_martin.yml
+++ b/.circleci/src/jobs/build_martin.yml
@@ -7,21 +7,17 @@ steps:
   - run: apt update -y && apt install -y nodejs npm
   - install_app_toolbelt
   - run:
-      name: "Checkout"
+      name: "Clone martin"
       command: |
         mkdir -p ~/.ssh
         touch ~/.ssh/known_hosts
         echo "github.com ssh-rsa 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" >> ~/.ssh/known_hosts
-        git clone git@github.com:urbica/martin.git ~/martin
-        git config advice.detachedHead false
-        git checkout ed14582a8f5c3e11bfb165f3b012edccd929b479
+        git config --global advice.detachedHead false
+        git clone --depth 1 --branch v0.13.0 git@github.com:maplibre/martin.git ~/martin
   - restore_cache:
       keys:
         - v1-cargo-{{ checksum "Cargo.toml" }}-{{ checksum "Cargo.lock" }}
   - prepare_workspace
-  - run:
-      name: "Update OpenSSL library due to failed compilation"
-      command: cargo update openssl --precise 0.10.64
   - run:
       name: "Build"
       command: |
diff --git a/backend/src/main/resources/config/config.yml b/backend/src/main/resources/config/config.yml
index e0b054676..c64d7707b 100644
--- a/backend/src/main/resources/config/config.yml
+++ b/backend/src/main/resources/config/config.yml
@@ -7,8 +7,8 @@ postgres:
   user: postgres
   password: postgres
 map:
-  # baseUrl: https://tiles.entitlementcard.app/rpc/physical_stores/{z}/{x}/{y}.pbf
-  baseUrl: http://localhost:5002/rpc/physical_stores/{z}/{x}/{y}.pbf
+  # baseUrl: https://tiles.entitlementcard.app/physical_stores/{z}/{x}/{y}
+  baseUrl: http://localhost:5002/physical_stores/{z}/{x}/{y}
 geocoding:
   enabled: false
   host: nominatim.maps.tuerantuer.org
diff --git a/docker-compose.yml b/docker-compose.yml
index 53ca33d2e..7cab8e179 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -1,8 +1,8 @@
 version: "3.5"
 services:
   martin:
-    image: urbica/martin
-    command: martin --config /app/config.yaml
+    image: ghcr.io/maplibre/martin:v0.13.0
+    command: --config /app/config.yaml
     volumes:
       - ./docker/martin-config.yaml:/app/config.yaml
     depends_on:
@@ -32,6 +32,7 @@ services:
       - 127.0.0.1:5002:80
     volumes:
       - ./backend/ehrenamtskarte-maplibre-style:/usr/share/nginx/html
+      - ./docker/map.html:/usr/share/nginx/html/map.html
       - ./docker/nginx-development.conf:/etc/nginx/conf.d/default.conf
     depends_on:
       - martin
diff --git a/docker/map.html b/docker/map.html
index 1fabe7cc5..835e1304e 100644
--- a/docker/map.html
+++ b/docker/map.html
@@ -4,8 +4,8 @@
     <meta charset="utf-8"/>
     <title>Display a map</title>
     <meta name="viewport" content="initial-scale=1,maximum-scale=1,user-scalable=no"/>
-    <script src="https://unpkg.com/maplibre-gl@2.4.0/dist/maplibre-gl.js"></script>
-    <link href="https://unpkg.com/maplibre-gl@2.4.0/dist/maplibre-gl.css" rel="stylesheet"/>
+    <script crossorigin src="https://unpkg.com/maplibre-gl@4.2.0/dist/maplibre-gl.js"></script>
+    <link href="https://unpkg.com/maplibre-gl@4.2.0/dist/maplibre-gl.css" rel="stylesheet"/>
     <style>
         body {
             margin: 0;
@@ -18,15 +18,24 @@
             bottom: 0;
             width: 100%;
         }
+
+        body > button {
+            position: relative;
+            z-index: 1;
+        }
     </style>
 </head>
 <body>
 <div id="map"></div>
+<button onclick="localStorage.setItem('style-url', BAYERN_URL); location.reload()">Switch to Bayern</button>
+<button onclick="localStorage.setItem('style-url', NUERNBERG_URL); location.reload()">Switch to Nuernberg</button>
 <script>
+  const BAYERN_URL = 'http://localhost:8000/project/bayern.ehrenamtskarte.app/map'
+  const NUERNBERG_URL = 'http://localhost:8000/project/nuernberg.sozialpass.app/map'
+  const styleUrl = localStorage.getItem("style-url") ?? BAYERN_URL
   new maplibregl.Map({
     container: 'map', // container id
-    //style: 'http://0.0.0.0:8000/project/bayern.ehrenamtskarte.app/map', // style URL
-    style: 'http://0.0.0.0:8000/project/nuernberg.sozialpass.app/map', // style URL
+    style: styleUrl, // style URL
     center: [0, 0], // starting position [lng, lat]
     zoom: 1 // starting zoom
   });
diff --git a/docker/martin-config.yaml b/docker/martin-config.yaml
index aa2744749..e529a8a54 100644
--- a/docker/martin-config.yaml
+++ b/docker/martin-config.yaml
@@ -1,28 +1,25 @@
----
-# Database connection string
-connection_string: "postgres://postgres:postgres@db-postgis:5432/ehrenamtskarte"
-
-# Connection keep alive timeout [default: 75]
-keep_alive: 75
-
 # The socket address to bind [default: 0.0.0.0:3000]
-listen_addresses: "0.0.0.0:3000"
-
-# Maximum connections pool size [default: 20]
-pool_size: 20
-
-# Enable watch mode
-watch: false
-
-# Trust invalid certificates. This introduces significant vulnerabilities, and should only be used as a last resort.
-danger_accept_invalid_certs: false
+listen_addresses: '0.0.0.0:3000'
 
 # Number of web server workers
 worker_processes: 8
 
-function_sources:
-  physical_stores:
-    id: physical_stores
-    schema: public
-
-    function: physical_stores
+# Amount of memory (in MB) to use for caching tiles [default: 512, 0 to disable]
+# We disable it, as martin cannot flush its own cache (yet?), so the tiles would never be updated.
+cache_size_mb: 0
+
+# Database configuration. This can also be a list of PG configs.
+postgres:
+  # Database connection string. You can use env vars too, for example:
+  #   $DATABASE_URL
+  #   ${DATABASE_URL:-postgresql://postgres@localhost/db}
+  connection_string: 'postgres://postgres:postgres@db-postgis:5432/ehrenamtskarte'
+
+  # Associative arrays of function sources
+  functions:
+    physical_stores:
+      schema: public
+      function: physical_stores
+    physical_stores_clustered:
+      schema: public
+      function: physical_stores_clustered
diff --git a/docker/nginx-development.conf b/docker/nginx-development.conf
index 95e27c6bb..cd4193004 100644
--- a/docker/nginx-development.conf
+++ b/docker/nginx-development.conf
@@ -23,6 +23,11 @@ server {
         try_files $uri /style.json;
     }
 
+    # Rewrite for backward compatibility to accommodate for new Martin URL scheme
+    # See https://github.com/digitalfabrik/entitlementcard/issues/1439.
+    # Added in May 2024; this rewrite can be removed (roughly) in  May 2025
+    rewrite ^\/rpc\/([^\/]+)\/([^\/]+)\/([^\/]+)\/([^\/]+)\.pbf(\?.*)?$ /$1/$2/$3/$4$5 break;
+
     location ~ /(?<fwd_path>.*) {
         proxy_set_header X-Rewrite-URL $request_uri;
         proxy_set_header X-Forwarded-Host $host;