diff --git a/requirements.txt b/requirements.txt
index 2d9baa8f..787d78fc 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -3,5 +3,6 @@ numpy
 scipy
 argparse
 scikit-image
+pytest
 # From python 3.11 and newer, toml is part of standard implementation
 tomli