diff --git a/README.md b/README.md
index b524474..c06ffea 100644
--- a/README.md
+++ b/README.md
@@ -17,7 +17,7 @@ If you don't have YunoHost, please consult [the guide](https://yunohost.org/#/in
 
 Weblate is a libre web-based translation tool with tight version control integration. It provides two user interfaces, propagation of translations across components, quality checks and automatic linking to source files.
 
-**Shipped version:** 4.9~ynh1
+**Shipped version:** 4.11.2~ynh1
 
 **Demo:** https://hosted.weblate.org/
 
diff --git a/README_fr.md b/README_fr.md
index 74c55b9..894ff04 100644
--- a/README_fr.md
+++ b/README_fr.md
@@ -13,7 +13,7 @@ Si vous n'avez pas YunoHost, regardez [ici](https://yunohost.org/#/install) pour
 
 Weblate est un outil de traduction libre avec une intégration étroite du contrôle de version. Il fournit deux interfaces utilisateur, la propagation des traductions entre les composants, les contrôles de qualité et la liaison automatique aux fichiers source. 
 
-**Version incluse :** 4.9~ynh1
+**Version incluse :** 4.11.2~ynh1
 
 **Démo :** https://hosted.weblate.org/
 
diff --git a/check_process b/check_process
index 130a260..12dcbbb 100644
--- a/check_process
+++ b/check_process
@@ -15,8 +15,8 @@
 		setup_private=1
 		setup_public=1
 		upgrade=1
-		#4.6.1
-		upgrade=1		from_commit=3f8363cdc588e609a775cb8b78b9d080f96405d9
+		# 4.9~ynh1
+		upgrade=1		from_commit=7fec5a47a80e00458a31f1270c4ace822961e7bf
 		backup_restore=1
 		multi_instance=1
 		port_already_use=0
diff --git a/conf/settings.py b/conf/settings.py
index 4346245..5643e8d 100644
--- a/conf/settings.py
+++ b/conf/settings.py
@@ -12,7 +12,7 @@
 ################################################################################
 ################################################################################
 #
-# Copyright © 2012 - 2021 Michal Čihař <michal@cihar.com>
+# Copyright © 2012–2022 Michal Čihař <michal@cihar.com>
 #
 # This file is part of Weblate <https://weblate.org/>
 #
@@ -87,6 +87,8 @@ DATABASES = {
         },
         # Persistent connections
         "CONN_MAX_AGE": 0,
+        # Disable server-side cursors, might be needed with pgbouncer
+        "DISABLE_SERVER_SIDE_CURSORS": False,
     }
 }
 
@@ -206,12 +208,6 @@ STATICFILES_FINDERS = (
 # You can generate it using weblate/examples/generate-secret-key
 SECRET_KEY = "__KEY__"
 
-_TEMPLATE_LOADERS = [
-    "django.template.loaders.filesystem.Loader",
-    "django.template.loaders.app_directories.Loader",
-]
-if not DEBUG:
-    _TEMPLATE_LOADERS = [("django.template.loaders.cached.Loader", _TEMPLATE_LOADERS)]
 TEMPLATES = [
     {
         "BACKEND": "django.template.backends.django.DjangoTemplates",
@@ -225,8 +221,8 @@ TEMPLATES = [
                 "django.contrib.messages.context_processors.messages",
                 "weblate.trans.context_processors.weblate_context",
             ],
-            "loaders": _TEMPLATE_LOADERS,
         },
+        "APP_DIRS": True,
     }
 ]
 
@@ -262,6 +258,14 @@ SOCIAL_AUTH_GITHUB_KEY = ""
 SOCIAL_AUTH_GITHUB_SECRET = ""
 SOCIAL_AUTH_GITHUB_SCOPE = ["user:email"]
 
+SOCIAL_AUTH_GITHUB_ORG_KEY = ""
+SOCIAL_AUTH_GITHUB_ORG_SECRET = ""
+SOCIAL_AUTH_GITHUB_ORG_NAME = ""
+
+SOCIAL_AUTH_GITHUB_TEAM_KEY = ""
+SOCIAL_AUTH_GITHUB_TEAM_SECRET = ""
+SOCIAL_AUTH_GITHUB_TEAM_ID = ""
+
 SOCIAL_AUTH_BITBUCKET_KEY = ""
 SOCIAL_AUTH_BITBUCKET_SECRET = ""
 SOCIAL_AUTH_BITBUCKET_VERIFIED_EMAILS_ONLY = True
@@ -794,6 +798,7 @@ CRISPY_TEMPLATE_PACK = "bootstrap3"
 #     "weblate.addons.flags.BulkEditAddon",
 #     "weblate.addons.generate.GenerateFileAddon",
 #     "weblate.addons.generate.PseudolocaleAddon",
+#     "weblate.addons.generate.PrefillAddon",
 #     "weblate.addons.json.JSONCustomizeAddon",
 #     "weblate.addons.properties.PropertiesSortAddon",
 #     "weblate.addons.git.GitSquashAddon",
diff --git a/manifest.json b/manifest.json
index 88220a9..0938bd6 100644
--- a/manifest.json
+++ b/manifest.json
@@ -6,7 +6,7 @@
 		"en": "Translation platform using Git and Python",
 		"fr": "Plateforme de traduction utilisant Git et Python" 
 	},
-	"version": "4.9~ynh1",
+	"version": "4.11.2~ynh1",
 	"url": "https://weblate.org",
 	"upstream": {
         "license": "AGPL-3.0",
diff --git a/scripts/_common.sh b/scripts/_common.sh
index 4421e61..27d6532 100644
--- a/scripts/_common.sh
+++ b/scripts/_common.sh
@@ -5,14 +5,20 @@
 #=================================================
 
 # dependencies used by the app
-pkg_dependencies="libxml2-dev libxslt-dev libfreetype6-dev libjpeg-dev libz-dev libyaml-dev \
-	libcairo-dev gir1.2-pango-1.0 libgirepository1.0-dev libacl1-dev libssl-dev \
-	build-essential python3-gdbm python3-enchant python3-dev python3-pip python3-virtualenv virtualenv git \
-	uwsgi uwsgi-plugin-python3 redis-server postgresql postgresql-contrib \
-	libpq-dev libglib2.0-dev mailutils python-celery-common hub"
+weblate_dependencies="libxml2-dev libxslt-dev libfreetype6-dev libjpeg-dev libz-dev libyaml-dev \
+   libffi-dev libcairo-dev gir1.2-pango-1.0 libgirepository1.0-dev \
+   libacl1-dev libssl-dev libpq-dev libjpeg62-turbo-dev build-essential \
+   python3-gdbm python3-dev python3-pip python3-virtualenv virtualenv git \
+   uwsgi uwsgi-plugin-python3 redis-server postgresql postgresql-contrib hub"
+
+# because weblate install borgbackup
+borgbackup_dependencies="libacl1-dev libacl1 libssl-dev liblz4-dev libzstd-dev libxxhash-dev \
+	build-essential pkg-config python3-pkgconfig"
+
+pkg_dependencies="$weblate_dependencies $borgbackup_dependencies"
 
 # Weblate's version for PIP and settings file
-weblate_version="4.9"
+weblate_version="4.11.2"
 
 debian_maj_version=$(sed 's/\..*//' /etc/debian_version)
 
diff --git a/scripts/install b/scripts/install
index 5de2393..4def320 100755
--- a/scripts/install
+++ b/scripts/install
@@ -125,9 +125,10 @@ chown -R "$app": "$final_path"
 	set -o nounset
 	cd "${final_path}"
 
-	sudo --user=$app $final_path/venv/bin/pip install --upgrade pip setuptools wheel
-	# Tmp fix
-	sudo --user=$app $final_path/venv/bin/pip install --upgrade cffi==1.14
+	sudo --user=$app $final_path/venv/bin/pip install --upgrade pip setuptools wheel pkgconfig
+
+	# Read the "Note" section in https://docs.weblate.org/en/weblate-4.11/admin/install/venv-debian.html#python-modules
+	sudo --user=$app $final_path/venv/bin/pip install --force-reinstall --no-binary :all: cffi
 	# Still needed with latest version of weblate?
 	sudo --user=$app $final_path/venv/bin/pip install Weblate=="$weblate_version"
 	sudo --user=$app $final_path/venv/bin/pip install psycopg2-binary ruamel.yaml aeidon phply
diff --git a/scripts/upgrade b/scripts/upgrade
index 05b2f3b..b533c03 100755
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -159,8 +159,9 @@ upgrade() {
 
 	ynh_systemd_action --service_name="$app-celery" --action="stop"
 
+	ynh_secure_remove --file="${final_path}/venv"
 	virtualenv --python=python3 "${final_path}/venv"
-	chown -R "$app": "$final_path"
+	chown -R $app: "$final_path"
 
 	#run source in a 'sub shell'
 	(
@@ -169,9 +170,10 @@ upgrade() {
 		set -o nounset
 		cd "${final_path}"
 
-		sudo --user=$app $final_path/venv/bin/pip install --upgrade pip setuptools wheel
-		# Tmp fix
-		sudo --user=$app $final_path/venv/bin/pip install --upgrade cffi==1.14
+		sudo --user=$app $final_path/venv/bin/pip install --upgrade pip setuptools wheel pkgconfig
+
+		# Read the "Note" section in https://docs.weblate.org/en/weblate-4.11/admin/install/venv-debian.html#python-modules
+		sudo --user=$app $final_path/venv/bin/pip install --force-reinstall --no-binary :all: cffi
 		# Still needed with latest version of weblate?
 		sudo --user=$app $final_path/venv/bin/pip install --upgrade Weblate=="$new_version"
 		sudo --user=$app $final_path/venv/bin/pip install psycopg2-binary ruamel.yaml aeidon phply