diff --git a/requirements.txt b/requirements.txt
index 3480af5..ae7c604 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -19,5 +19,6 @@ python-dateutil==2.8.0
 pytz==2019.2
 retrying==1.3.3
 six==1.12.0
+snakemake
 Werkzeug==0.15.6
 xlrd==1.2.0