diff --git a/requirements/time_tracker_api/dev.txt b/requirements/time_tracker_api/dev.txt
index 302acb78..2e5aee81 100644
--- a/requirements/time_tracker_api/dev.txt
+++ b/requirements/time_tracker_api/dev.txt
@@ -7,6 +7,7 @@
 
 # Tests
 pytest==5.2.0
+Flask_sqlalchemy
 
 # Mocking
 pytest-mock==2.0.0