diff --git a/requirements.txt b/requirements.txt
index c789c41..c37b3a5 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -70,7 +70,7 @@ pickleshare==0.7.5
 Pillow==8.0.1
 ply==3.11
 prompt-toolkit==2.0.10
-protobuf==3.13.0
+protobuf==3.15.0
 pure-sasl==0.6.2
 pyasn1==0.4.8
 pyasn1-modules==0.2.8