diff --git a/scripts/_common.sh b/scripts/_common.sh
index 7a9038d..1254db4 100644
--- a/scripts/_common.sh
+++ b/scripts/_common.sh
@@ -6,7 +6,7 @@
 
 # dependencies used by the app
 # HACK zlib1g-dev libjpeg-dev (libwebp-dev optional but necessary for stickers) are necessary to compile / install pillow
-pkg_dependencies="postgresql python3 zlib1g-dev libjpeg-dev libwebp-dev python3-venv libpq-dev"
+pkg_dependencies="postgresql python3 zlib1g-dev libjpeg-dev libwebp-dev python3-venv libpq-dev libffi-dev"
 
 #=================================================
 # PERSONAL HELPERS
diff --git a/scripts/install b/scripts/install
index 7bcefe1..7af3af8 100755
--- a/scripts/install
+++ b/scripts/install
@@ -188,7 +188,7 @@ mkdir -p /var/log/$app
 # Configure Mautrix-Bridge
 python3 -m venv $final_path
 export HOME=$final_path # HACK see https://github.com/mautrix/telegram/issues/661
-$final_path/bin/pip3 install --upgrade setuptools wheel # HACK fixes "error: invalid command 'bdist_wheel'"
+$final_path/bin/pip3 install --upgrade pip setuptools wheel
 $final_path/bin/pip3 install --upgrade $final_path/src/mautrix-telegram.tar.gz[postgres,speedups,qr_login] # metrics,hq_thumbnails,e2be
 # -r optional-requirements.txt
 $final_path/bin/python3 -m mautrix_telegram -g -c "$mautrix_config_path" -r "$app_service_registration_path/$app.yaml"
diff --git a/scripts/upgrade b/scripts/upgrade
index efe9cac..896060e 100644
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -117,8 +117,9 @@ ynh_system_user_create --username=$mautrix_bridge_user
 
 if [ "$upgrade_type" == "UPGRADE_APP" ]; then
   ynh_script_progression --message="Upgrading python packages..." --weight=1
-  export HOME=$final_path # HACK see https://github.com/mautrix/telegram/issues/661
-  $final_path/bin/pip3 install --upgrade setuptools wheel # HACK fixes "error: invalid command 'bdist_wheel'"
+  python3 -m venv $final_path
+  export HOME=$final_path
+  $final_path/bin/pip3 install --upgrade pip setuptools wheel
   $final_path/bin/pip3 install --upgrade $final_path/src/mautrix-telegram.tar.gz[postgres,speedups,qr_login] #,hq_thumbnails
 fi