diff --git a/requirements.txt b/requirements.txt
index a508a1c12..fbcc0f64e 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -34,7 +34,7 @@ pexpect==4.8.0
 pickleshare==0.7.5
 Pillow==7.1.2
 prompt-toolkit==3.0.5
-protobuf==3.12.1
+protobuf==3.15.0
 ptyprocess==0.6.0
 pyasn1==0.4.8
 pyasn1-modules==0.2.8