diff --git a/composer.lock b/composer.lock
index e203ba56f7d66eefd56ef2fe903f883d423bb41f..971bbe4ee5342e367b35110464cf10e6bc6aeca3 100644
--- a/composer.lock
+++ b/composer.lock
@@ -168,11 +168,11 @@
         },
         {
             "name": "dbp/relay-core-bundle",
-            "version": "v0.1.19",
+            "version": "v0.1.22",
             "source": {
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                 "url": "https://gitlab.tugraz.at/dbp/relay/dbp-relay-core-bundle",
-                "reference": "d659cede5e17eb5e442987be6992fb63dc5ddee4"
+                "reference": "744e4df48e117ccad9b4c161b872b4eb68740bdd"
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@@ -189,6 +189,7 @@
                 "symfony/event-dispatcher": "^5.3",
                 "symfony/expression-language": "^5.3",
                 "symfony/framework-bundle": "^5.3",
+                "symfony/messenger": "^5.3",
                 "symfony/mime": "^5.3",
                 "symfony/security-bundle": "^5.3",
                 "symfony/security-core": "^5.3",
@@ -227,7 +228,7 @@
             "license": [
                 "AGPL-3.0-or-later"
             ],
-            "time": "2021-10-25T08:53:54+00:00"
+            "time": "2021-11-04T14:32:50+00:00"
         },
         {
             "name": "doctrine/annotations",
@@ -1591,6 +1592,75 @@
             },
             "time": "2019-03-08T08:55:37+00:00"
         },
+        {
+            "name": "symfony/amqp-messenger",
+            "version": "v5.3.7",
+            "source": {
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+                "url": "https://github.com/symfony/amqp-messenger.git",
+                "reference": "7bf38ef8c72d51163aa9048d7a8abe03be33f2b4"
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+                "reference": "7bf38ef8c72d51163aa9048d7a8abe03be33f2b4",
+                "shasum": ""
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+                "symfony/process": "^4.4|^5.0",
+                "symfony/property-access": "^4.4|^5.0",
+                "symfony/serializer": "^4.4|^5.0"
+            },
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+            "autoload": {
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+                    "Symfony\\Component\\Messenger\\Bridge\\Amqp\\": ""
+                },
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+                    "/Tests/"
+                ]
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "Fabien Potencier",
+                    "email": "fabien@symfony.com"
+                },
+                {
+                    "name": "Symfony Community",
+                    "homepage": "https://symfony.com/contributors"
+                }
+            ],
+            "description": "Symfony AMQP extension Messenger Bridge",
+            "homepage": "https://symfony.com",
+            "support": {
+                "source": "https://github.com/symfony/amqp-messenger/tree/v5.3.7"
+            },
+            "funding": [
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+                    "url": "https://symfony.com/sponsor",
+                    "type": "custom"
+                },
+                {
+                    "url": "https://github.com/fabpot",
+                    "type": "github"
+                },
+                {
+                    "url": "https://tidelift.com/funding/github/packagist/symfony/symfony",
+                    "type": "tidelift"
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+            ],
+            "time": "2021-08-25T04:45:08+00:00"
+        },
         {
             "name": "symfony/asset",
             "version": "v5.3.4",
@@ -2075,6 +2145,79 @@
             ],
             "time": "2021-03-23T23:28:01+00:00"
         },
+        {
+            "name": "symfony/doctrine-messenger",
+            "version": "v5.3.10",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/symfony/doctrine-messenger.git",
+                "reference": "971b7d5bd1c641cb8a699f4dcfd1079e2030761a"
+            },
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+                "url": "https://api.github.com/repos/symfony/doctrine-messenger/zipball/971b7d5bd1c641cb8a699f4dcfd1079e2030761a",
+                "reference": "971b7d5bd1c641cb8a699f4dcfd1079e2030761a",
+                "shasum": ""
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+            "require": {
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+                "symfony/messenger": "^5.1",
+                "symfony/service-contracts": "^1.1|^2"
+            },
+            "conflict": {
+                "doctrine/dbal": "<2.10",
+                "doctrine/persistence": "<1.3"
+            },
+            "require-dev": {
+                "doctrine/dbal": "^2.10|^3.0",
+                "doctrine/persistence": "^1.3|^2",
+                "symfony/property-access": "^4.4|^5.0",
+                "symfony/serializer": "^4.4|^5.0"
+            },
+            "type": "symfony-bridge",
+            "autoload": {
+                "psr-4": {
+                    "Symfony\\Component\\Messenger\\Bridge\\Doctrine\\": ""
+                },
+                "exclude-from-classmap": [
+                    "/Tests/"
+                ]
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
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+                    "name": "Fabien Potencier",
+                    "email": "fabien@symfony.com"
+                },
+                {
+                    "name": "Symfony Community",
+                    "homepage": "https://symfony.com/contributors"
+                }
+            ],
+            "description": "Symfony Doctrine Messenger Bridge",
+            "homepage": "https://symfony.com",
+            "support": {
+                "source": "https://github.com/symfony/doctrine-messenger/tree/v5.3.10"
+            },
+            "funding": [
+                {
+                    "url": "https://symfony.com/sponsor",
+                    "type": "custom"
+                },
+                {
+                    "url": "https://github.com/fabpot",
+                    "type": "github"
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+            ],
+            "time": "2021-10-21T08:22:59+00:00"
+        },
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             "version": "v5.3.7",
@@ -2909,6 +3052,96 @@
             ],
             "time": "2021-10-29T08:36:48+00:00"
         },
+        {
+            "name": "symfony/messenger",
+            "version": "v5.3.10",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/symfony/messenger.git",
+                "reference": "5146f9ecede00a3570f766a6c14cf494d479e038"
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+                "reference": "5146f9ecede00a3570f766a6c14cf494d479e038",
+                "shasum": ""
+            },
+            "require": {
+                "php": ">=7.2.5",
+                "psr/log": "^1|^2|^3",
+                "symfony/amqp-messenger": "^5.1",
+                "symfony/deprecation-contracts": "^2.1",
+                "symfony/doctrine-messenger": "^5.1",
+                "symfony/polyfill-php80": "^1.16",
+                "symfony/redis-messenger": "^5.1"
+            },
+            "conflict": {
+                "symfony/event-dispatcher": "<4.4",
+                "symfony/framework-bundle": "<4.4",
+                "symfony/http-kernel": "<4.4",
+                "symfony/serializer": "<5.0"
+            },
+            "require-dev": {
+                "psr/cache": "^1.0|^2.0|^3.0",
+                "symfony/console": "^4.4|^5.0",
+                "symfony/dependency-injection": "^4.4|^5.0",
+                "symfony/event-dispatcher": "^4.4|^5.0",
+                "symfony/http-kernel": "^4.4|^5.0",
+                "symfony/process": "^4.4|^5.0",
+                "symfony/property-access": "^4.4|^5.0",
+                "symfony/routing": "^4.4|^5.0",
+                "symfony/serializer": "^5.0",
+                "symfony/service-contracts": "^1.1|^2",
+                "symfony/stopwatch": "^4.4|^5.0",
+                "symfony/validator": "^4.4|^5.0"
+            },
+            "suggest": {
+                "enqueue/messenger-adapter": "For using the php-enqueue library as a transport."
+            },
+            "type": "library",
+            "autoload": {
+                "psr-4": {
+                    "Symfony\\Component\\Messenger\\": ""
+                },
+                "exclude-from-classmap": [
+                    "/Tests/"
+                ]
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "Samuel Roze",
+                    "email": "samuel.roze@gmail.com"
+                },
+                {
+                    "name": "Symfony Community",
+                    "homepage": "https://symfony.com/contributors"
+                }
+            ],
+            "description": "Helps applications send and receive messages to/from other applications or via message queues",
+            "homepage": "https://symfony.com",
+            "support": {
+                "source": "https://github.com/symfony/messenger/tree/v5.3.10"
+            },
+            "funding": [
+                {
+                    "url": "https://symfony.com/sponsor",
+                    "type": "custom"
+                },
+                {
+                    "url": "https://github.com/fabpot",
+                    "type": "github"
+                },
+                {
+                    "url": "https://tidelift.com/funding/github/packagist/symfony/symfony",
+                    "type": "tidelift"
+                }
+            ],
+            "time": "2021-10-28T19:22:18+00:00"
+        },
         {
             "name": "symfony/mime",
             "version": "v5.3.8",
@@ -3964,6 +4197,73 @@
             ],
             "time": "2021-09-07T07:41:40+00:00"
         },
+        {
+            "name": "symfony/redis-messenger",
+            "version": "v5.3.10",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/symfony/redis-messenger.git",
+                "reference": "94ba9b20a7f2b28ec9e93823d7912ced0108b398"
+            },
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+                "url": "https://api.github.com/repos/symfony/redis-messenger/zipball/94ba9b20a7f2b28ec9e93823d7912ced0108b398",
+                "reference": "94ba9b20a7f2b28ec9e93823d7912ced0108b398",
+                "shasum": ""
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+                "php": ">=7.2.5",
+                "symfony/deprecation-contracts": "^2.1",
+                "symfony/messenger": "^5.1"
+            },
+            "require-dev": {
+                "symfony/property-access": "^4.4|^5.0",
+                "symfony/serializer": "^4.4|^5.0"
+            },
+            "type": "symfony-bridge",
+            "autoload": {
+                "psr-4": {
+                    "Symfony\\Component\\Messenger\\Bridge\\Redis\\": ""
+                },
+                "exclude-from-classmap": [
+                    "/Tests/"
+                ]
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "Fabien Potencier",
+                    "email": "fabien@symfony.com"
+                },
+                {
+                    "name": "Symfony Community",
+                    "homepage": "https://symfony.com/contributors"
+                }
+            ],
+            "description": "Symfony Redis extension Messenger Bridge",
+            "homepage": "https://symfony.com",
+            "support": {
+                "source": "https://github.com/symfony/redis-messenger/tree/v5.3.10"
+            },
+            "funding": [
+                {
+                    "url": "https://symfony.com/sponsor",
+                    "type": "custom"
+                },
+                {
+                    "url": "https://github.com/fabpot",
+                    "type": "github"
+                },
+                {
+                    "url": "https://tidelift.com/funding/github/packagist/symfony/symfony",
+                    "type": "tidelift"
+                }
+            ],
+            "time": "2021-10-25T14:58:02+00:00"
+        },
         {
             "name": "symfony/routing",
             "version": "v5.3.7",
@@ -7175,30 +7475,30 @@
         },
         {
             "name": "symfony/monolog-bundle",
-            "version": "v3.7.0",
+            "version": "v3.7.1",
             "source": {
                 "type": "git",
                 "url": "https://github.com/symfony/monolog-bundle.git",
-                "reference": "4054b2e940a25195ae15f0a49ab0c51718922eb4"
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-                "reference": "4054b2e940a25195ae15f0a49ab0c51718922eb4",
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                 "php": ">=7.1.3",
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-                "symfony/http-kernel": "~4.4 || ^5.0",
-                "symfony/monolog-bridge": "~4.4 || ^5.0"
+                "symfony/config": "~4.4 || ^5.0 || ^6.0",
+                "symfony/dependency-injection": "^4.4 || ^5.0 || ^6.0",
+                "symfony/http-kernel": "~4.4 || ^5.0 || ^6.0",
+                "symfony/monolog-bridge": "~4.4 || ^5.0 || ^6.0"
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-                "symfony/console": "~4.4 || ^5.0",
-                "symfony/phpunit-bridge": "^5.1",
-                "symfony/yaml": "~4.4 || ^5.0"
+                "symfony/console": "~4.4 || ^5.0 || ^6.0",
+                "symfony/phpunit-bridge": "^5.2 || ^6.0",
+                "symfony/yaml": "~4.4 || ^5.0 || ^6.0"
             },
             "type": "symfony-bundle",
             "extra": {
@@ -7236,7 +7536,7 @@
             ],
             "support": {
                 "issues": "https://github.com/symfony/monolog-bundle/issues",
-                "source": "https://github.com/symfony/monolog-bundle/tree/v3.7.0"
+                "source": "https://github.com/symfony/monolog-bundle/tree/v3.7.1"
             },
             "funding": [
                 {
@@ -7252,7 +7552,7 @@
                     "type": "tidelift"
                 }
             ],
-            "time": "2021-03-31T07:20:47+00:00"
+            "time": "2021-11-05T10:34:29+00:00"
         },
         {
             "name": "symfony/options-resolver",