diff --git a/tests/requirements.txt b/tests/requirements.txt
index 7a8e6842..1c022ee8 100644
--- a/tests/requirements.txt
+++ b/tests/requirements.txt
@@ -1,7 +1,7 @@
-coverage
+coverage>=4.4.0
 ddt
 mock
-pytest
+pytest>=3.6.0
 pytest-cov
 funcsigs
 requests