diff --git a/hyperbox/networks/nasbench301/install/requirements_cu111.txt b/hyperbox/networks/nasbench301/install/requirements_cu111.txt
index f0106b1..eee695c 100644
--- a/hyperbox/networks/nasbench301/install/requirements_cu111.txt
+++ b/hyperbox/networks/nasbench301/install/requirements_cu111.txt
@@ -163,7 +163,7 @@ prettytable==2.2.1
 prometheus-client==0.3.1
 promise==2.3
 prompt-toolkit==3.0.20
-protobuf==3.14.0
+protobuf==3.18.3
 psutil==5.4.7
 ptyprocess==0.6.0
 pudb==2021.1