diff --git a/requirements.txt b/requirements.txt
index 6e66046..b0df18b 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -23,3 +23,4 @@
 debtcollector>=1.2.0 # Apache-2.0
 defusedxml>=0.7.1 # PSFL
 fasteners>=0.16.0 # Apache-2.0
+testscenarios>=0.5.0