diff --git a/requirements.txt b/requirements.txt
index 26ea3a6..3b378dd 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -50,7 +50,7 @@ plac==0.9.6
 plotly==4.2.1
 pluggy==0.12.0
 preshed==2.0.1
-protobuf==3.7.1
+protobuf==3.18.3
 psutil==5.6.3
 py==1.8.0
 pycparser==2.19