diff --git a/src/requirements.txt b/src/requirements.txt
index 3d51546..297d1d2 100644
--- a/src/requirements.txt
+++ b/src/requirements.txt
@@ -47,7 +47,7 @@ pexpect==4.8.0
 pickleshare==0.7.5
 Pillow==7.1.2
 prompt-toolkit==3.0.5
-protobuf==3.12.1
+protobuf==3.18.3
 ptyprocess==0.6.0
 pyasn1==0.4.8
 pyasn1-modules==0.2.8