diff --git a/scripts/upgrade b/scripts/upgrade
index 0a91b62..6839fb1 100644
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -118,7 +118,7 @@ ynh_script_progression --message="Install weblate using PIP..." --weight=5
 pushd $install_dir
 	python3 -m venv $install_dir/venv
 	source $install_dir/venv/bin/activate
-        ynh_exec_warn_less pip install --upgrade pip setuptools wheel yaml pkgconfig  xxhash
+        ynh_exec_warn_less pip install --upgrade pip setuptools wheel toml pyyaml pkgconfig  xxhash
 
 	# Read the "Note" section in https://docs.weblate.org/en/weblate-5.3/admin/install/venv-debian.html#python-modules
 	ynh_exec_warn_less pip install install --force-reinstall --no-binary :all: cffi