diff --git a/plasma_framework/python_tests/requirements.txt b/plasma_framework/python_tests/requirements.txt
index 8e6039d73..247cec2ff 100644
--- a/plasma_framework/python_tests/requirements.txt
+++ b/plasma_framework/python_tests/requirements.txt
@@ -36,7 +36,7 @@ packaging==19.2
 parsimonious==0.8.1
 -e git+git@github.com:omisego/py-solc-simple.git@f84477e8a82f2bb548ad814f383f5be14ba1d086#egg=py-solc-simple
 pluggy==0.13.0
-protobuf==3.10.0
+protobuf==3.18.3
 psutil==5.6.6
 py==1.8.0
 py-solc-x==0.4.0