diff --git a/.travis.yml b/.travis.yml
index 59a4489..58d570a 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,8 +1,16 @@
+dist: xenial
+
+addons:
+  apt:
+    packages:
+      - ant-optional
+
 language: php
 
 php:
-  - "7.1"
+  - "7.3"
   - "7.2"
+  - "7.1"
 
 env:
   - CONTAO_VERSION=contao/core-bundle ~4.4.0
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 2b6da8c..3d1bcc2 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,9 +6,18 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
-## 3.1.2 - TBD
+## 3.1.3 - 2019-01-10
 
-[Full Changelog](https://github.com/netzmacht/contao-leaflet-maps/compare/3.1.1...hotfix/3.1.2)
+[Full Changelog](https://github.com/netzmacht/contao-leaflet-maps/compare/3.1.2...3.1.3)
+
+### Fixed
+
+ - Fix broken api routes in Contao 4.6/Symfony 4 (#69)
+ - Fix broken about.html.twig template. Error block was missing
+
+## 3.1.2 - 2018-12-18
+
+[Full Changelog](https://github.com/netzmacht/contao-leaflet-maps/compare/3.1.1...3.1.2)
 
 ### Fixed
 
diff --git a/src/Bundle/Resources/config/services.yml b/src/Bundle/Resources/config/services.yml
index e7cff08..a129799 100644
--- a/src/Bundle/Resources/config/services.yml
+++ b/src/Bundle/Resources/config/services.yml
@@ -128,11 +128,13 @@ services:
       - { name: Netzmacht\Contao\PageContext\Request\PageIdDeterminator }
 
   Netzmacht\Contao\Leaflet\Frontend\Action\LayerDataAction:
+    public: true
     arguments:
       - '@netzmacht.contao_leaflet.map.provider'
       - '@netzmacht.contao_leaflet.filter_factory'
 
   Netzmacht\Contao\Leaflet\Backend\Action\AboutAction:
+    public: true
     arguments:
       - '@templating'
       - '%kernel.project_dir%'
diff --git a/src/Bundle/Resources/views/backend/about.html.twig b/src/Bundle/Resources/views/backend/about.html.twig
index 26fc47f..b426c24 100644
--- a/src/Bundle/Resources/views/backend/about.html.twig
+++ b/src/Bundle/Resources/views/backend/about.html.twig
@@ -2,6 +2,8 @@
 
 {% block headline %}{{ "MOD.leaflet_about.1"|trans({}, 'contao_modules') }}{% endblock %}
 
+{% block error %}{% endblock %}
+
 {% block main %}
     <div class="netzmacht-leaflet-credits">
         <div class="header">