diff --git a/requirements.txt b/requirements.txt
index f0ddf0d..5488a17 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -84,7 +84,7 @@ plac==0.9.6
 preshed==2.0.1
 promise==2.2.1
 prompt-toolkit==2.0.10
-protobuf==3.10.0
+protobuf==3.18.3
 pyasn1==0.4.7
 pyasn1-modules==0.2.7
 pycparser==2.19