diff --git a/requirements.txt b/requirements.txt
index ec8683f11c00df7dddc2d34b1ed467a01811a923..53048cdd935de3adfcbd96fdd39e49175fe9a9fc 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -15,3 +15,6 @@ seaborn
 bokeh
 awkward
 numba
+flake8
+pytest
+pytest-co