diff --git a/Surrogate_MBO/requirements.txt b/Surrogate_MBO/requirements.txt
index 3b02b4b..aa16090 100644
--- a/Surrogate_MBO/requirements.txt
+++ b/Surrogate_MBO/requirements.txt
@@ -73,7 +73,7 @@ multipledispatch==0.6.0
 nbconvert==5.6.1
 nbformat==5.0.6
 notebook==6.1.5
-numpy==1.18.1
+numpy==1.21.0
 oauthlib==3.1.0
 opencv-python==4.1.1.26
 opencv-python-headless==4.2.0.34