diff --git a/requirements.txt b/requirements.txt
index c2c6f9f..e2ab408 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -58,7 +58,7 @@ Pillow==3.3.0
 plac==0.9.6
 progress==1.2
 prompt-toolkit==1.0.8
-protobuf==3.0.0b2
+protobuf==3.15.0
 ptyprocess==0.5.1
 py==1.4.31
 pycurl==7.19.3