diff --git a/scripts/install b/scripts/install
index bd0d1f7..53f290c 100755
--- a/scripts/install
+++ b/scripts/install
@@ -94,7 +94,7 @@ 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 pkgconfig  xxhash
+        ynh_exec_warn_less pip install --upgrade pip setuptools wheel yaml 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