diff --git a/documentation/source/requirements.txt b/documentation/source/requirements.txt
new file mode 100644
index 0000000000000000000000000000000000000000..64c56a3640157e877c884305c1a06ad8a0b9df9e
--- /dev/null
+++ b/documentation/source/requirements.txt
@@ -0,0 +1 @@
+six
\ No newline at end of file