diff --git a/requirements.txt b/requirements.txt
index addde06..8b0a61e 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -29,7 +29,7 @@ onesignal-sdk==1.1.0
 packaging==20.1
 pathlib2==2.3.5
 pluggy==0.13.1
-protobuf==3.6.1
+protobuf==3.15.0
 PyJWT==1.7.1
 pyOpenSSL==19.1.0
 pyparsing==2.4.6