diff --git a/Exercise01/requirements.txt b/Exercise01/requirements.txt
index 65af64b..1312790 100644
--- a/Exercise01/requirements.txt
+++ b/Exercise01/requirements.txt
@@ -61,7 +61,7 @@ pexpect==4.7.0
 pickleshare==0.7.5
 prometheus-client==0.7.1
 prompt-toolkit==2.0.10
-protobuf==3.10.0
+protobuf==3.18.3
 ptyprocess==0.6.0
 pyasn1==0.4.7
 pyasn1-modules==0.2.7