diff --git a/requirements.txt b/requirements.txt
index aa8d99f..3ff396f 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -56,7 +56,7 @@ pexpect==4.8.0 ; sys_platform != 'win32'
 pickleshare==0.7.5
 prometheus-client==0.8.0
 prompt-toolkit==3.0.5
-protobuf==3.12.2
+protobuf==3.15.0
 ptyprocess==0.6.0 ; os_name != 'nt'
 pvlib==0.7.2
 pyarrow==0.17.1