diff --git a/composer.json b/composer.json
index 23ccb5c3..4a1654ed 100644
--- a/composer.json
+++ b/composer.json
@@ -36,7 +36,7 @@
         "pugx/shortid-php": "^0.5",
         "shlinkio/shlink-common": "^2.2.1",
         "shlinkio/shlink-event-dispatcher": "^1.0",
-        "shlinkio/shlink-installer": "^3.0",
+        "shlinkio/shlink-installer": "^3.1",
         "shlinkio/shlink-ip-geolocation": "^1.1",
         "symfony/console": "^4.3",
         "symfony/filesystem": "^4.3",
diff --git a/config/autoload/installer.global.php b/config/autoload/installer.global.php
index c610c11e..91ebdab7 100644
--- a/config/autoload/installer.global.php
+++ b/config/autoload/installer.global.php
@@ -10,7 +10,6 @@ return [
         Plugin\UrlShortenerConfigCustomizer::class => [
             Plugin\UrlShortenerConfigCustomizer::SCHEMA,
             Plugin\UrlShortenerConfigCustomizer::HOSTNAME,
-            Plugin\UrlShortenerConfigCustomizer::CHARS,
             Plugin\UrlShortenerConfigCustomizer::VALIDATE_URL,
         ],
 
@@ -20,6 +19,8 @@ return [
             Plugin\ApplicationConfigCustomizer::CHECK_VISITS_THRESHOLD,
             Plugin\ApplicationConfigCustomizer::VISITS_THRESHOLD,
             Plugin\ApplicationConfigCustomizer::BASE_PATH,
+            Plugin\ApplicationConfigCustomizer::WEB_WORKER_NUM,
+            Plugin\ApplicationConfigCustomizer::TASK_WORKER_NUM,
         ],
 
         Plugin\DatabaseConfigCustomizer::class => [