diff --git a/Deploying_Streamlit_Apps_To_GCP/requirements.txt b/Deploying_Streamlit_Apps_To_GCP/requirements.txt
index 70f28ad..dab5a34 100644
--- a/Deploying_Streamlit_Apps_To_GCP/requirements.txt
+++ b/Deploying_Streamlit_Apps_To_GCP/requirements.txt
@@ -26,7 +26,7 @@ numpy==1.18.1
 pandas==0.25.3
 pathtools==0.1.2
 Pillow>=7.1.0
-protobuf==3.11.2
+protobuf==3.18.3
 pyrsistent==0.15.7
 python-dateutil==2.8.0 ; python_version >= '2.7'
 pytz==2019.3