diff --git a/noahime/PERT/requirements.txt b/noahime/PERT/requirements.txt
index 84adb1eb..c41f6807 100644
--- a/noahime/PERT/requirements.txt
+++ b/noahime/PERT/requirements.txt
@@ -1,4 +1,4 @@
-protobuf == 3.10.0
+protobuf == 3.18.3
 tensorboardX == 1.9
 boto3 == 1.10.6
 botocore == 1.13.6