diff --git a/setup.py b/setup.py
index c260f76..e49a7a2 100644
--- a/setup.py
+++ b/setup.py
@@ -17,7 +17,7 @@
 
 # What packages are required for this module to be executed?
 REQUIRED = [
-    'protobuf==3.7.1',
+    'protobuf==3.18.3',
     'grpcio >=1.17, <2',
     'ipython==7.9',
     'pandas',