diff --git a/requirements.txt b/requirements.txt
old mode 100755
new mode 100644
index f528eec..788bbad
--- a/requirements.txt
+++ b/requirements.txt
@@ -22,7 +22,7 @@ numpy==1.17.4
 oauthlib==3.1.0
 opt-einsum==3.1.0
 pandas==0.25.3
-protobuf==3.10.0
+protobuf==3.15.0
 pyasn1==0.4.8
 pyasn1-modules==0.2.7
 pyparsing==2.4.5