diff --git a/reddit_tft/setup.py b/reddit_tft/setup.py
index dc4c0a171..c1ddf0d44 100644
--- a/reddit_tft/setup.py
+++ b/reddit_tft/setup.py
@@ -18,7 +18,7 @@
 VERSION = '1.0'
 
 REQUIRED_PACKAGES = ['tensorflow-transform==0.1.10',
-                     'protobuf==3.6.0',
+                     'protobuf==3.18.3',
                      'tensorflow==1.2.0']
 
 if __name__ == '__main__':