diff --git a/build-requirements-2.7.txt b/build-requirements-2.7.txt
index af88a912..37007c16 100644
--- a/build-requirements-2.7.txt
+++ b/build-requirements-2.7.txt
@@ -4,3 +4,4 @@ hypothesis
 coveralls
 pylint
 diff_cover
+pytest>=4.6.5
diff --git a/build-requirements.txt b/build-requirements.txt
index 5a193b85..cd6d8d48 100644
--- a/build-requirements.txt
+++ b/build-requirements.txt
@@ -3,3 +3,4 @@ hypothesis
 coveralls
 pylint
 diff_cover
+pytest>=4.6.5