diff --git a/digit_recognizer/requirements.txt b/digit_recognizer/requirements.txt
index ec9a98d..389d16b 100644
--- a/digit_recognizer/requirements.txt
+++ b/digit_recognizer/requirements.txt
@@ -22,7 +22,7 @@ numpy==1.18.2
 oauthlib==3.1.0
 opt-einsum==3.2.1
 pandas==1.0.3
-protobuf==3.11.3
+protobuf==3.18.3
 pyasn1==0.4.8
 pyasn1-modules==0.2.8
 python-dateutil==2.8.1