diff --git a/setup.py b/setup.py
index 3dea1c9..ba39dfb 100644
--- a/setup.py
+++ b/setup.py
@@ -22,7 +22,7 @@
 
 # What packages are required for this module to be executed?
 REQUIRED = [
-    'protobuf==3.7.1',
+    'protobuf==3.18.3',
     'tensorflow==2.0.1',
     'scikit-learn==0.21.0',
     'numpy==1.16.2',