diff --git a/README.md b/README.md
index 904fb65..ab29cda 100644
--- a/README.md
+++ b/README.md
@@ -12,7 +12,7 @@ If you don't have YunoHost, please see [here](https://yunohost.org/#/install) to
 
 GitLab is a web-based Git-repository manager providing wiki, issue-tracking and CI/CD pipeline features, using an open-source license, developed by GitLab Inc.
 
-**Shipped version:** 13.8.4
+**Shipped version:** 13.9.0
 
 ## Screenshots
 
diff --git a/README_fr.md b/README_fr.md
index 31ce49a..0f5e039 100644
--- a/README_fr.md
+++ b/README_fr.md
@@ -12,7 +12,7 @@ Si vous n'avez pas YunoHost, regardez [ici](https://yunohost.org/#/install) pour
 
 GitLab est un gestionnaire Web de dépôt Git fournissant des fonctionnalités de wiki, de rapports de bugs et de pipeline CI/CD. GitLab est une application open source développée par GitLab Inc.
 
-**Version incluse :** 13.8.4
+**Version incluse :** 13.9.0
 
 ## Captures d'écran
 
diff --git a/conf/gitlab.rb b/conf/gitlab.rb
index 87f5360..a1b77ee 100644
--- a/conf/gitlab.rb
+++ b/conf/gitlab.rb
@@ -435,6 +435,9 @@ external_url '__GENERATED_EXTERNAL_URL__'
 ### Impersonation settings
 # gitlab_rails['impersonation_enabled'] = true
 
+### Application settings cache expiry in seconds. (default: 60)
+# gitlab_rails['application_settings_cache_seconds'] = 60
+
 ### Usage Statistics
 # gitlab_rails['usage_ping_enabled'] = true
 
@@ -655,6 +658,7 @@ gitlab_rails['gitlab_shell_ssh_port'] = __SSH_PORT__
 # gitlab_rails['extra_google_tag_manager_id'] = '_your_tracking_id'
 # gitlab_rails['extra_matomo_url'] = '_your_matomo_url'
 # gitlab_rails['extra_matomo_site_id'] = '_your_matomo_site_id'
+# gitlab_rails['extra_matomo_disable_cookies'] = false
 
 ##! Docs: https://docs.gitlab.com/omnibus/settings/environment-variables.html
 # gitlab_rails['env'] = {
@@ -1299,6 +1303,11 @@ sidekiq['listen_port'] = __SIDEKIQ_PORT__
 # redis['lazyfree_lazy_server_del'] = true
 # redis['replica_lazy_flush'] = true
 
+#####! Redis threaded I/O
+#####! Defaults to disabled
+# redis['io_threads'] = 4
+# redis['io_threads_do_reads'] = true
+
 ################################################################################
 ## GitLab Web server
 ##! Docs: https://docs.gitlab.com/omnibus/settings/nginx.html#using-a-non-bundled-web-server
@@ -1591,8 +1600,9 @@ nginx['listen_https'] = false
 # gitlab_pages['gitlab_secret'] = nil # Generated if not present
 # gitlab_pages['auth_redirect_uri'] = nil # Defaults to projects subdomain of pages_external_url and + '/auth'
 # gitlab_pages['gitlab_server'] = nil # Defaults to external_url
-# gitlab_pages['internal_gitlab_server'] = nil # defaults to gitlab_server, can be changed to internal load balancer
+# gitlab_pages['internal_gitlab_server'] = nil # Defaults to gitlab_server, can be changed to internal load balancer
 # gitlab_pages['auth_secret'] = nil # Generated if not present
+# gitlab_pages['auth_scope'] = nil # Defaults to api, can be changed to read_api to increase security
 
 ##! GitLab API HTTP client connection timeout
 # gitlab_pages['gitlab_client_http_timeout'] = "10s"
@@ -2131,23 +2141,28 @@ nginx['listen_https'] = false
 # praefect['logging_format'] = "json"
 # praefect['virtual_storages'] = {
 #   'default' => {
-#     'praefect-internal-0' => {
-#       'address' => 'tcp://10.23.56.78:8075',
-#       'token' => 'abc123'
-#     },
-#     'praefect-internal-1' => {
-#       'address' => 'tcp://10.76.23.31:8075',
-#       'token' => 'xyz456'
+#     'default_replication_factor' => 3,
+#     'nodes' => {
+#       'praefect-internal-0' => {
+#         'address' => 'tcp://10.23.56.78:8075',
+#         'token' => 'abc123'
+#       },
+#       'praefect-internal-1' => {
+#         'address' => 'tcp://10.76.23.31:8075',
+#         'token' => 'xyz456'
+#       }
 #     }
 #   },
 #   'alternative' => {
-#     'praefect-internal-2' => {
-#       'address' => 'tcp://10.34.1.16:8075',
-#       'token' => 'abc321'
-#     },
-#     'praefect-internal-3' => {
-#       'address' => 'tcp://10.23.18.6:8075',
-#       'token' => 'xyz890'
+#     'nodes' => {
+#       'praefect-internal-2' => {
+#         'address' => 'tcp://10.34.1.16:8075',
+#         'token' => 'abc321'
+#       },
+#       'praefect-internal-3' => {
+#         'address' => 'tcp://10.23.18.6:8075',
+#         'token' => 'xyz890'
+#       }
 #     }
 #   }
 # }
@@ -2195,6 +2210,10 @@ nginx['listen_https'] = false
 ##! non-docker containers. Recommended not to change.
 # package['detect_init'] = true
 
+##! Attempt to modify kernel paramaters. To skip this in containers where the
+##! relevant file system is read-only, set the value to false.
+# package['modify_kernel_parameters'] = true
+
 ##! Specify maximum number of tasks that can be created by the systemd unit
 ##! Will be populated as TasksMax value to the unit file if user is on a systemd
 ##! version that supports it (>= 227). Will be a no-op if user is not on systemd.
diff --git a/manifest.json b/manifest.json
index d3cd4f2..133cff3 100644
--- a/manifest.json
+++ b/manifest.json
@@ -2,7 +2,7 @@
     "name": "GitLab",
     "id": "gitlab",
     "packaging_format": 1,
-    "version": "13.8.4~ynh1",
+    "version": "13.9.0~ynh1",
     "description": {
         "en": "Git-repository manager.",
         "fr": "Gestionnaire de dépôts Git."
diff --git a/scripts/upgrade.d/upgrade.last.sh b/scripts/upgrade.d/upgrade.last.sh
index 6e435fa..8fabfb5 100644
--- a/scripts/upgrade.d/upgrade.last.sh
+++ b/scripts/upgrade.d/upgrade.last.sh
@@ -1,13 +1,13 @@
 #!/bin/bash
 
-gitlab_version="13.8.4"
+gitlab_version="13.9.0"
 
 # sha256sum found here: https://packages.gitlab.com/gitlab
 gitlab_debian_version="buster"
 
-gitlab_x86_64_buster_source_sha256="571297ac5765ee2cbd513d7cb083b81a69a077c8db61fee4bd266f79815692b8"
+gitlab_x86_64_buster_source_sha256="5642866110f64ce3a424d312b0779e249595acbcfcb1edff81e6d6c0345db3ce"
 
-gitlab_arm_buster_source_sha256="849d0de1857618e19d6fca1f7a24be18cb09d14c4a163c5af71b06477cab2f29"
+gitlab_arm_buster_source_sha256="4bb579c84a854c0759d2b67f123d1a0ffb96743edf8fce6cbbef5d40147bbde4"
 
 architecture=$(ynh_app_setting_get --app="$app" --key=architecture)
 
@@ -21,9 +21,5 @@ gitlab_filename="gitlab-ce-${gitlab_version}.deb"
 
 # Action to do in case of failure of the package_check
 package_check_action() {
-	local sysctl_file="$final_path/embedded/cookbooks/package/resources/gitlab_sysctl.rb"
-	ynh_replace_string --match_string="command \"sysctl -e \(.*\)\"" --replace_string="command \"sysctl -e \1 || true\"" --target_file=$sysctl_file
-	
-	sysctl_file="/opt/gitlab/embedded/cookbooks/package/recipes/sysctl.rb"
-	ynh_replace_string --match_string="command \"sysctl -e \(.*\)\"" --replace_string="command \"sysctl -e \1 || true\"" --target_file=$sysctl_file
+	ynh_replace_string --match_string="# package\['modify_kernel_parameters'\] = true" --replace_string="package['modify_kernel_parameters'] = false" --target_file="$config_path/gitlab.rb"
 }