diff --git a/python/requirements-optional.txt b/python/requirements-optional.txt
index 21a4f9367..3b32873ba 100644
--- a/python/requirements-optional.txt
+++ b/python/requirements-optional.txt
@@ -3,3 +3,4 @@ rlp >= 1.1.0
 web3 >= 4.8
 Pillow
 stellar-sdk>=4.0.0,<6.0.0
+types-click