diff --git a/requirements.txt b/requirements.txt
index 216744c5..b33d2517 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -10,4 +10,5 @@ matplotlib-inline==0.1.6
 pylint==3.0.2
 black==23.11.0
 pytest==7.4.3
+pytest-cov==4.1.0
 git+/~https://github.com/callummcdougall/eindex.git
\ No newline at end of file