diff --git a/container-filetransfer/requirements.txt b/container-filetransfer/requirements.txt
index 2e5621a..8d7c53e 100644
--- a/container-filetransfer/requirements.txt
+++ b/container-filetransfer/requirements.txt
@@ -23,7 +23,7 @@ idna==2.8
 jmespath==0.9.4
 lepl==5.1.3
 paramiko==2.4.2
-protobuf==3.15.0
+protobuf==3.18.3
 pyasn1-modules==0.2.5
 pyasn1==0.4.5
 pycparser==2.19