diff --git a/requirements.txt b/requirements.txt
index dbe28e0..0c08259 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -36,7 +36,7 @@ opt-einsum==3.1.0
 pandas==0.25.3
 pathtools==0.1.2
 Pillow==7.1.0
-protobuf==3.10.0
+protobuf==3.15.0
 pyasn1==0.4.7
 pyasn1-modules==0.2.7
 pyrsistent==0.15.7