diff --git a/public/v4/apps/graylog.yml b/public/v4/apps/graylog.yml
deleted file mode 100644
index b894451..0000000
--- a/public/v4/apps/graylog.yml
+++ /dev/null
@@ -1,110 +0,0 @@
-captainVersion: 4
-services:
-    $$cap_appname-mongodb:
-        image: mongo:$$cap_mongo_version
-        volumes:
-            - $$cap_appname-db-data:/data/db
-            - $$cap_appname-db-config:/data/configdb
-        restart: always
-        caproverExtra:
-            notExposeAsWebApp: 'true'
-    $$cap_appname-elasticsearch:
-        image: docker.elastic.co/elasticsearch/elasticsearch:$$cap_elasticsearch_version
-        volumes:
-            - $$cap_appname-elasticsearch-data:/usr/share/elasticsearch/data
-        restart: always
-        environment:
-            ES_JAVA_OPTS: -Xms512m -Xmx512m
-            cluster.name: $$cap_elasticsearch_cluster_name
-            http.port: $$cap_container_port
-            node.master: $$cap_elasticsearch_node_master
-            node.data: $$cap_elasticsearch_node_data
-            discovery.zen.minimum_master_nodes: $$cap_elasticsearch_minimum_master_nodes
-            discovery.zen.ping.unicast.hosts: $$cap_elasticsearch_unicast_hosts
-        caproverExtra:
-            notExposeAsWebApp: 'true'
-    $$cap_appname:
-        depends_on:
-            - $$cap_appname-mongodb
-            - $$cap_appname-elasticsearch
-        image: graylog/graylog:$$cap_graylog_version
-        restart: always
-        environment:
-            GRAYLOG_MONGODB_URI: mongodb://srv-captain--$$cap_appname-mongodb/graylog
-            GRAYLOG_ELASTICSEARCH_HOSTS: http://srv-captain--$$cap_appname-elasticsearch:$$cap_container_port
-            GRAYLOG_HTTP_EXTERNAL_URI: //$$cap_appname.$$cap_root_domain/
-            GRAYLOG_ROOT_PASSWORD_SHA2: $$cap_graylog_password
-        caproverExtra:
-            containerHttpPort: '9000'
-caproverOneClickApp:
-    variables:
-        - id: $$cap_graylog_version
-          label: Graylog Version
-          defaultValue: '3.1'
-          description: Check out their docker page for the valid tags https://hub.docker.com/r/graylog/graylog/tags
-          validRegex: /^([^\s^\/])+$/
-        - id: $$cap_graylog_password
-          label: Graylog Admin Password
-          defaultValue: ''
-          description: 'Admin password SHA256 encoded. Generate with: echo -n "<password>" | shasum -a 256 | cut -d" " -f1'
-          validRegex: /^([^\s^\/])+$/
-        - id: $$cap_mongo_version
-          label: MongoDB Version
-          defaultValue: '4'
-          description: Check out their docker page for the valid tags https://hub.docker.com/r/library/mongo/tags/
-          validRegex: /^([^\s^\/])+$/
-        - id: $$cap_elasticsearch_version
-          label: 'Elasticsearch Version Tag '
-          description: 'Check out the releases overview: https://www.elastic.co/de/downloads/elasticsearch'
-          defaultValue: 6.7.1
-          validRegex: /^([^\s^\/])+$/
-        - id: $$cap_elasticsearch_cluster_name
-          label: Elasticsearch Cluster Name
-          description: Only nodes within the same cluster name can be combined
-          defaultValue: elasticsearch-cluster
-          validRegex: /^([^\s^\/])+$/
-        - id: $$cap_elasticsearch_unicast_hosts
-          label: Elasticsearch Unicasts hosts
-          description: 'References to other node to attach to. (for example: srv-captain--XXX)'
-          defaultValue: 'false'
-          validRegex: /^([^\s^\/])+$/
-        - id: $$cap_elasticsearch_node_data
-          label: Elasticsearch Node Data
-          description: Should the node used for storing data? (true / false)
-          defaultValue: 'true'
-          validRegex: /^([^\s^\/])+$/
-        - id: $$cap_elasticsearch_node_master
-          label: Elasticsearch Node Master
-          description: Define node as master-eligible (usual first node YES, others NO).
-          defaultValue: 'true'
-          validRegex: /^([^\s^\/])+$/
-        - id: $$cap_elasticsearch_minimum_master_nodes
-          label: Elasticsearch Minimum Master Nodes
-          description: 'Define minimum amount of master (N) ( best practice: ceil(N/2 + 1) ).'
-          defaultValue: '1'
-          validRegex: /^([0-9])+$/
-        - id: $$cap_container_port
-          label: Elasticsearch Container TCP Port
-          defaultValue: '9200'
-          description: Internal port for Elasticsearch the container listens to.
-          validRegex: /^([0-9])+$/
-    instructions:
-        start: >-
-            Graylog Log Management.
-
-
-            NOTICE!:
-            Be sure to extend the virtual memory on all your hosts!
-            1. echo 'vm.max_map_count=262144' >> /etc/sysctl.conf
-            2. sysctl -p
-        end: >-
-            Deployment of Graylog if finished.
-            You will see 502 errors for the next 5+ minutes while Graylog starts up.
-            Goto <YOUR-APP-URL> and login as "admin" with your unhashed password.
-
-            IMPORTANT! Do not forget to map port 12201 and 12202 in your app config. Without port mapping, Graylog will not work.
-
-    displayName: 'Graylog'
-    isOfficial: true
-    description: Graylog is used for log management of both structured and unstructured data along with debugging applications.
-    documentation: Taken from https://hub.docker.com/r/graylog/graylog
diff --git a/public/v4/logos/graylog.png b/public/v4/logos/graylog.png
deleted file mode 100644
index cff7152..0000000
Binary files a/public/v4/logos/graylog.png and /dev/null differ