diff --git a/ros2_batch_job/__main__.py b/ros2_batch_job/__main__.py
index 9f96ae60a..656b6f0c2 100644
--- a/ros2_batch_job/__main__.py
+++ b/ros2_batch_job/__main__.py
@@ -69,7 +69,7 @@
     'pydocstyle',
     'pyflakes',
     'pyparsing',
-    'pytest',
+    'pytest==6.0.2',
     'pytest-cov',
     'pytest-mock',
     'pytest-repeat',