diff --git a/requirements.txt b/requirements.txt
index 84272aa..df844c7 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -23,7 +23,7 @@ lxml==4.6.3
 MarkupSafe==1.1.1
 numpy==1.19.0
 pandas==1.0.5
-protobuf==3.12.2
+protobuf==3.18.3
 pyasn1==0.4.8
 pyasn1-modules==0.2.8
 PyJWT==1.7.1