diff --git a/tests/requirements.txt b/tests/requirements.txt
index 9fa3f79e3..a20264fb9 100644
--- a/tests/requirements.txt
+++ b/tests/requirements.txt
@@ -1,3 +1,4 @@
+pytest==3.8.1
 CherryPy==17.3.0
 Flask==1.0.2
 cheroot==6.5.2
@@ -8,3 +9,4 @@ pytest-forked==0.2
 pytest-xdist==1.22.2
 python-bitcoinlib==0.7.0
 tqdm==4.26.0
+pytest-timeout==1.3.3