diff --git a/_scripts/py/requirements.txt b/_scripts/py/requirements.txt
new file mode 100644
index 0000000..a363a51
--- /dev/null
+++ b/_scripts/py/requirements.txt
@@ -0,0 +1,2 @@
+ruamel.yaml==0.16.5
+ruamel.yaml.clib==0.1.2