diff --git a/requirements.txt b/requirements.txt
index 53048cdd935de3adfcbd96fdd39e49175fe9a9fc..c0af1dfeeea6d29855f0206c0a7d7a627f43aa3d 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -17,4 +17,4 @@ awkward
 numba
 flake8
 pytest
-pytest-co
+pytest-cov