diff --git a/manifest.json b/manifest.json
index cae2977..a433a38 100644
--- a/manifest.json
+++ b/manifest.json
@@ -6,7 +6,7 @@
         "en": "Alternative front-end to YouTube",
         "fr": "Front-end alternatif à YouTube"
     },
-    "version": "0.20.1~ynh8",
+    "version": "0.20.1~ynh9",
     "url": "https://invidio.us/",
     "upstream": {
         "license": "GPL-3.0-only",
diff --git a/scripts/install b/scripts/install
index 3159fc0..2379b16 100644
--- a/scripts/install
+++ b/scripts/install
@@ -46,8 +46,8 @@ ynh_webpath_register --app=$app --domain=$domain --path_url=$path_url
 #=================================================
 ynh_script_progression --message="Storing installation settings..." --weight=2
 
-ynh_app_setting_set --app=$app --key=domain   --value=$domain
-ynh_app_setting_set --app=$app --key=path     --value=$path_url
+ynh_app_setting_set --app=$app --key=domain --value=$domain
+ynh_app_setting_set --app=$app --key=path --value=$path_url
 ynh_app_setting_set --app=$app --key=language --value=$language
 
 #=================================================
@@ -66,11 +66,6 @@ ynh_app_setting_set --app=$app --key=port --value=$port
 #=================================================
 ynh_script_progression --message="Installing dependencies..." --weight=9
 
-#ynh_exec_warn_less apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 --recv-keys 379CE192D401AB61
-#ynh_install_extra_repo --repo="deb https://dl.bintray.com/crystal/deb all stable" --append
-
-#ynh_exec_warn_less curl -fsSL https://crystal-lang.org/install.sh | bash -s -- --crystal=0.36 
-
 ynh_exec_warn_less ynh_install_app_dependencies $pkg_dependencies
 
 tempdir="$(mktemp -d)"
diff --git a/scripts/upgrade b/scripts/upgrade
index 9720372..8f0117a 100644
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -72,13 +72,12 @@ ynh_systemd_action --service_name=$app --action=stop --log_path=systemd
 #=================================================
 ynh_script_progression --message="Upgrading dependencies..." --weight=8
 
-#ynh_exec_warn_less apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 --recv-keys 379CE192D401AB61
-#ynh_install_extra_repo --repo="deb https://dl.bintray.com/crystal/deb all stable" --append
-
-ynh_exec_warn_less curl -fsSL https://crystal-lang.org/install.sh | bash -s -- --crystal=0.36
-
 ynh_exec_warn_less ynh_install_app_dependencies $pkg_dependencies
 
+tempdir="$(mktemp -d)"
+ynh_setup_source --dest_dir=$tempdir --source_id=crystal
+ynh_exec_warn_less dpkg -i $tempdir/crystal_0.36.1-1_amd64.deb
+
 #=================================================
 # DOWNLOAD, CHECK AND UNPACK SOURCE
 #=================================================