diff --git a/tests/requirements.txt b/tests/requirements.txt
index b5c81dac66..6bb511ebbf 100644
--- a/tests/requirements.txt
+++ b/tests/requirements.txt
@@ -1,3 +1,3 @@
-pytest
+pytest==3.2.0
 --pre --extra-index-url https://archive.panda3d.org/branches/deploy-ng
 panda3d