diff --git a/requirements.txt b/requirements.txt
index 39dda2e..6714d7a 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -4,6 +4,7 @@ scipy==1.4.1
 scikit-learn>=0.22.2
 torch>=1.8.0
 tqdm>=4.64.1
+matplotlib>=3.7.0
 adversarial-robustness-toolbox>=1.11.0
 
 # testing