Pin pytest-cov to latest version 2.2.0

diff --git a/requirements.txt b/requirements.txt
index 9289e2be1b165da56aa1575c65c298bfcb98c0d7..4312e0ec6e994dd0b228a083cb93b079a96d6fe4 100644 (file)
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,6 +1,6 @@
 # Testing and deployment packages.
 coverage==4.1
 pytest==2.9.2
-pytest-cov
+pytest-cov==2.2.0
 freezegun
 wheel==0.23.0