diff --git a/requirements/ci.in b/requirements/ci.in
index cac9426f..cb39bc39 100644
--- a/requirements/ci.in
+++ b/requirements/ci.in
@@ -2,3 +2,4 @@
 -c constraints.txt
 
 tox                       # Virtualenv management for tests
+coverage                  # to capture code coverage information