diff --git a/requirements.txt b/requirements.txt
index 2663e31..3d70b7e 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -12,7 +12,7 @@ oauthlib==2.0.1
 olefile==0.44
 packaging==16.8
 Pillow==6.2.0
-protobuf==3.2.0
+protobuf==3.18.3
 pyasn1==0.2.2
 pyasn1-modules==0.0.8
 pyparsing==2.1.10