diff --git a/README.md b/README.md
index b8380fa..2a4d699 100644
--- a/README.md
+++ b/README.md
@@ -15,6 +15,7 @@ Currently, when you pip install Django RQ Scheduler the following packages are a
 Testing also requires:
 
 * factory_boy >= 2.6.1
+* psycopg2 >= 2.6.1
 
 
 ## Usage