diff --git a/scripts/_common.sh b/scripts/_common.sh
index e95268c..955f96d 100644
--- a/scripts/_common.sh
+++ b/scripts/_common.sh
@@ -5,10 +5,13 @@
 #=================================================
 
 # dependencies used by the app
-pkg_dependencies="g++ libjemalloc1|libjemalloc2 libjemalloc-dev zlib1g-dev libreadline-dev libpq-dev libssl-dev libyaml-dev libcurl4-dev libapr1-dev libxslt1-dev libxml2-dev vim imagemagick postgresql postgresql-server-dev-all postgresql-contrib optipng jhead jpegoptim gifsicle brotli"
-build_pkg_dependencies=""
+#pkg_dependencies="g++ libjemalloc1|libjemalloc2 libjemalloc-dev zlib1g-dev libreadline-dev libpq-dev libssl-dev libyaml-dev libcurl4-dev libapr1-dev libxslt1-dev libxml2-dev vim imagemagick postgresql postgresql-server-dev-all postgresql-contrib optipng jhead jpegoptim gifsicle brotli"
+pkg_dependencies="postgresql postgresql-client postgresql-contrib"
+build_pkg_dependencies="libcurl4-openssl-dev libyaml-dev libxml2-dev libpq-dev libreadline-dev brotli libunwind-dev libtcmalloc-minimal4 cmake pngcrush pngquant advancecomp jhead jpegoptim libjpeg-turbo-progs optipng"
 
-ruby_version="2.7.1"
+ruby_version="2.7.6"
+
+nodejs_version="16"
 
 #=================================================
 # PERSONAL HELPERS
diff --git a/scripts/install b/scripts/install
index 8831a38..9509e6c 100644
--- a/scripts/install
+++ b/scripts/install
@@ -65,7 +65,9 @@ ynh_app_setting_set --app=$app --key=admin --value=$admin
 ynh_script_progression --message="Installing dependencies..."
 
 ynh_exec_warn_less ynh_install_app_dependencies $pkg_dependencies $build_pkg_dependencies
+ynh_exec_warn_less ynh_install_extra_app_dependencies --repo="deb https://dl.yarnpkg.com/debian/ stable main" --package="yarn" --key="https://dl.yarnpkg.com/debian/pubkey.gpg"
 ynh_exec_warn_less ynh_install_ruby --ruby_version=$ruby_version
+ynh_exec_warn_less ynh_install_nodejs --nodejs_version=$nodejs_version
 
 #=================================================
 # CREATE DEDICATED USER
@@ -186,13 +188,21 @@ if [ -n "$(uname -m | grep arm)" ] ; then
 	ln -s $(ldconfig -p | grep libpsl | awk 'END {print $NF}') libpsl.so)
 fi
 
+pushd "$final_path"
+	ynh_use_nodejs
+	ynh_npm install --location=global terser
+	ynh_npm install --location=global uglify-js
+	ynh_exec_warn_less ynh_exec_as $app $ynh_node_load_PATH yarn install --production --frozen-lockfile
+	ynh_exec_warn_less ynh_exec_as $app $ynh_node_load_PATH yarn cache clean
+popd
+
 #=================================================
 # PREPARE THE DATABASE
 #=================================================
 ynh_script_progression --message="Preparing the database..."
 
-ynh_exec_warn_less exec_login_as $app RAILS_ENV=production bin/rake db:migrate
-ynh_exec_warn_less exec_login_as $app RAILS_ENV=production bin/rake assets:precompile
+ynh_exec_warn_less exec_login_as $app RAILS_ENV=production bin/bundle exec rake db:migrate
+ynh_exec_warn_less exec_login_as $app RAILS_ENV=production bin/bundle exec rake themes:update assets:precompile
 
 ynh_exec_warn_less ynh_install_app_dependencies $pkg_dependencies
 ynh_package_autoremove
diff --git a/scripts/remove b/scripts/remove
index 9e27c5d..1d5f13c 100644
--- a/scripts/remove
+++ b/scripts/remove
@@ -89,6 +89,7 @@ ynh_script_progression --message="Removing dependencies..."
 
 # Remove metapackage and its dependencies
 ynh_remove_app_dependencies
+ynh_remove_nodejs
 ynh_remove_ruby
 
 #=================================================
diff --git a/scripts/restore b/scripts/restore
index 204178d..e346337 100644
--- a/scripts/restore
+++ b/scripts/restore
@@ -78,7 +78,9 @@ ynh_script_progression --message="Reinstalling dependencies..."
 
 # Define and install dependencies
 ynh_exec_warn_less ynh_install_app_dependencies $pkg_dependencies $build_pkg_dependencies
+ynh_exec_warn_less ynh_install_extra_app_dependencies --repo="deb https://dl.yarnpkg.com/debian/ stable main" --package="yarn" --key="https://dl.yarnpkg.com/debian/pubkey.gpg"
 ynh_exec_warn_less ynh_install_ruby --ruby_version=$ruby_version
+ynh_exec_warn_less ynh_install_nodejs --nodejs_version=$nodejs_version
 
 #=================================================
 # RESTORE THE NGINX CONFIGURATION
diff --git a/scripts/upgrade b/scripts/upgrade
index a83c554..a0853c8 100644
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -183,7 +183,9 @@ chown -R $app:www-data "$final_path"
 ynh_script_progression --message="Upgrading dependencies..."
 
 ynh_exec_warn_less ynh_install_app_dependencies $pkg_dependencies $build_pkg_dependencies
+ynh_exec_warn_less ynh_install_extra_app_dependencies --repo="deb https://dl.yarnpkg.com/debian/ stable main" --package="yarn" --key="https://dl.yarnpkg.com/debian/pubkey.gpg"
 ynh_exec_warn_less ynh_install_ruby --ruby_version=$ruby_version
+ynh_exec_warn_less ynh_install_nodejs --nodejs_version=$nodejs_version
 ynh_use_ruby
 
 #=================================================
@@ -270,6 +272,14 @@ then
 			ln -s $(ldconfig -p | grep libpsl | awk 'END {print $NF}') libpsl.so
 		)
 	fi
+
+	pushd "$final_path"
+		ynh_use_nodejs
+		ynh_npm install --location=global terser
+		ynh_npm install --location=global uglify-js
+		ynh_exec_warn_less ynh_exec_as $app $ynh_node_load_PATH yarn install --production --frozen-lockfile
+		ynh_exec_warn_less ynh_exec_as $app $ynh_node_load_PATH yarn cache clean
+	popd
 fi
 
 #=================================================
@@ -280,8 +290,8 @@ if [ "$upgrade_type" == "UPGRADE_APP" ]
 then
 	ynh_script_progression --message="Preparing the database..."
 
-	ynh_exec_warn_less exec_login_as $app RAILS_ENV=production bin/rake db:migrate
-	ynh_exec_warn_less exec_login_as $app RAILS_ENV=production bin/rake assets:precompile
+	ynh_exec_warn_less exec_login_as $app RAILS_ENV=production bin/bundle exec rake db:migrate
+	ynh_exec_warn_less exec_login_as $app RAILS_ENV=production bin/bundle exec rake themes:update assets:precompile
 fi
 
 ynh_exec_warn_less ynh_install_app_dependencies $pkg_dependencies
diff --git a/sources/patches/app-1-use-latest_uglify-js.patch b/sources/patches/app-1-use-latest_uglify-js.patch
index 5af4246..415ec9e 100644
--- a/sources/patches/app-1-use-latest_uglify-js.patch
+++ b/sources/patches/app-1-use-latest_uglify-js.patch
@@ -2,11 +2,13 @@ diff --git a/lib/tasks/assets.rake b/lib/tasks/assets.rake
 index 4a02d5f1b1..7b47f21658 100644
 --- a/lib/tasks/assets.rake
 +++ b/lib/tasks/assets.rake
-@@ -94,6 +94,7 @@ def compress_ruby(from, to)
+@@ -126,6 +126,9 @@
    data = File.read("#{assets_path}/#{from}")
-
+ 
    uglified, map = Uglifier.new(comments: :none,
 +                               harmony: true,
++                               mangle: false,
++                               compress: false,
                                 source_map: {
                                   filename: File.basename(from),
                                   output_filename: File.basename(to)
diff --git a/sources/patches/app-5-fix-admin-watched-words-action.patch b/sources/patches/app-5-fix-admin-watched-words-action.patch
new file mode 100644
index 0000000..a431d71
--- /dev/null
+++ b/sources/patches/app-5-fix-admin-watched-words-action.patch
@@ -0,0 +1,15 @@
+diff --git a/app/assets/javascripts/admin/addon/controllers/admin-watched-words-action.js b/app/assets/javascripts/admin/addon/controllers/admin-watched-words-action.js
+index 2b53a91eb3..eec55647d5 100644
+--- a/app/assets/javascripts/admin/addon/controllers/admin-watched-words-action.js
++++ b/app/assets/javascripts/admin/addon/controllers/admin-watched-words-action.js
+@@ -32,9 +32,9 @@
+     for (const { regexp, word } of words) {
+       try {
+         RegExp(regexp);
+-      } catch {
++      } catch (err) {
+         return I18n.t("admin.watched_words.invalid_regex", { word });
+       }
+     }
+   },
+ 
diff --git a/sources/patches/app-6-fix-download-calendar.patch b/sources/patches/app-6-fix-download-calendar.patch
new file mode 100644
index 0000000..580e10d
--- /dev/null
+++ b/sources/patches/app-6-fix-download-calendar.patch
@@ -0,0 +1,13 @@
+diff --git a/app/assets/javascripts/discourse/app/lib/download-calendar.js b/app/assets/javascripts/discourse/app/lib/download-calendar.js
+index 2b53a91eb3..eec55647d5 100644
+--- a/app/assets/javascripts/discourse/app/lib/download-calendar.js
++++ b/app/assets/javascripts/discourse/app/lib/download-calendar.js
+@@ -22,7 +22,7 @@
+ }
+ 
+ export function downloadIcs(title, dates) {
+-  const REMOVE_FILE_AFTER = 20_000;
++  const REMOVE_FILE_AFTER = 20000;
+   const file = new File([generateIcsData(title, dates)], {
+     type: "text/plain",
+   });
diff --git a/sources/patches/app-7-fix-uppy-upload.patch b/sources/patches/app-7-fix-uppy-upload.patch
new file mode 100644
index 0000000..6af3580
--- /dev/null
+++ b/sources/patches/app-7-fix-uppy-upload.patch
@@ -0,0 +1,13 @@
+diff --git a/app/assets/javascripts/discourse/app/mixins/uppy-upload.js b/app/assets/javascripts/discourse/app/mixins/uppy-upload.js
+index 2b53a91eb3..eec55647d5 100644
+--- a/app/assets/javascripts/discourse/app/mixins/uppy-upload.js
++++ b/app/assets/javascripts/discourse/app/mixins/uppy-upload.js
+@@ -21,7 +21,7 @@
+ import { warn } from "@ember/debug";
+ import bootbox from "bootbox";
+ 
+-export const HUGE_FILE_THRESHOLD_BYTES = 104_857_600; // 100MB
++export const HUGE_FILE_THRESHOLD_BYTES = "104_857_600"; // 100MB
+ 
+ export default Mixin.create(UppyS3Multipart, {
+   uploading: false,