diff --git a/requirements.txt b/requirements.txt
index cce231b537e74eb25776faecac38f109fa4ffb21..b4031d497894859cf30da97cdf9b708d0a64bbb5 100755
--- a/requirements.txt
+++ b/requirements.txt
@@ -11,3 +11,4 @@ pyyaml
 h5py
 hjson
 enum34
+systax