diff --git a/requirements.txt b/requirements.txt
old mode 100755
new mode 100644
index 858e46e..00c3df5
--- a/requirements.txt
+++ b/requirements.txt
@@ -58,7 +58,7 @@ oauthlib==2.0.7
 pilkit==2.0
 Pillow==6.0.0
 pillowcase==2.0.0
-protobuf==3.8.0
+protobuf==3.15.0
 psycopg2-binary==2.8.2
 pyasn1==0.4.5
 pyasn1-modules==0.2.5