diff --git a/scripts/upgrade b/scripts/upgrade
index 637cde0..f1cc868 100644
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -131,10 +131,17 @@ echo onlyoffice-documentserver onlyoffice/db-name string $db_name | debconf-set-
 ynh_script_progression --message="Upgrading OnlyOffice..."
 
 ynh_remove_extra_repo --name="$app" # backward compat
-apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 --recv-keys CB2DE8E5
+
+mkdir -p -m 700 ~/.gnupg
+curl -fsSL https://download.onlyoffice.com/GPG-KEY-ONLYOFFICE | gpg --no-default-keyring --keyring gnupg-ring:/tmp/onlyoffice.gpg --import
+chmod 644 /tmp/onlyoffice.gpg
+sudo chown root:root /tmp/onlyoffice.gpg
+sudo mv /tmp/onlyoffice.gpg /usr/share/keyrings/onlyoffice.gpg
+
+echo "deb [signed-by=/usr/share/keyrings/onlyoffice.gpg] https://download.onlyoffice.com/repo/debian squeeze main" | sudo tee /etc/apt/sources.list.d/onlyoffice.list
 
 # ynh_remove_app_dependencies
-ynh_install_extra_app_dependencies --repo="https://download.onlyoffice.com/repo/debian squeeze main" --package=$extra_dependencies --key="https://ftp-master.debian.org/keys/release-$(lsb_release --release --short).asc"
+#ynh_install_extra_app_dependencies --repo="https://download.onlyoffice.com/repo/debian squeeze main" --package=$extra_dependencies --key="https://ftp-master.debian.org/keys/release-$(lsb_release --release --short).asc"
 
 #=================================================
 # UPDATE A CONFIG FILE