diff --git a/requirements-tests.txt b/requirements-tests.txt
index eddee8fae..d951c4480 100644
--- a/requirements-tests.txt
+++ b/requirements-tests.txt
@@ -1,4 +1,4 @@
 docker==3.6.0
 pytest==3.0.6
 pytest-timeout==1.2.0
-pyyaml==3.12
+pyyaml>=4.2b1