diff --git a/case_studies/mmt/requirements.txt b/case_studies/mmt/requirements.txt
index fea6967..263d5b9 100644
--- a/case_studies/mmt/requirements.txt
+++ b/case_studies/mmt/requirements.txt
@@ -73,7 +73,7 @@ netaddr==0.7.18
 networkx==2.2
 nose==1.3.7
 notebook==5.7.4
-numexpr==2.6.9
+numexpr==2.8.5
 numpy==1.14.3
 nvidia-ml-py==375.53.1
 ofed-le-utils==1.0.3