diff --git a/Containerisation/python-jupyter/requirements.txt b/Containerisation/python-jupyter/requirements.txt
index 397af57..98fcd53 100644
--- a/Containerisation/python-jupyter/requirements.txt
+++ b/Containerisation/python-jupyter/requirements.txt
@@ -32,7 +32,7 @@ pexpect==4.2.1
 pickleshare==0.7.4
 Pillow==4.3.0
 prompt-toolkit==1.0.15
-protobuf==3.4.0
+protobuf==3.18.3
 ptyprocess==0.5.2
 Pygments==2.2.0
 pyparsing==2.2.0