diff --git a/case_studies/mmt/requirements.txt b/case_studies/mmt/requirements.txt
index fea6967..db00972 100644
--- a/case_studies/mmt/requirements.txt
+++ b/case_studies/mmt/requirements.txt
@@ -30,7 +30,7 @@ functools32==3.2.3.post2
 futures==3.2.0
 gast==0.2.0
 gpustat==0.4.1
-grpcio==1.11.0
+grpcio==1.53.2
 gyp==0.1
 h5py==2.8.0
 html5lib==0.9999999