diff --git a/web/requirements.txt b/web/requirements.txt
index 9ce093b..5701e93 100644
--- a/web/requirements.txt
+++ b/web/requirements.txt
@@ -16,7 +16,7 @@ Markdown==3.2
 numpy==1.18.1
 oauthlib==3.1.0
 opt-einsum==3.1.0
-protobuf==3.11.3
+protobuf==3.15.0
 pyasn1==0.4.8
 pyasn1-modules==0.2.8
 requests==2.22.0