diff --git a/requirements.txt b/requirements.txt
index 719b8db..ec82ede 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -32,7 +32,7 @@ numpy==1.15.4
 pandas==0.23.4
 Pillow==5.4.1
 ply==3.11
-protobuf==3.7.0
+protobuf==3.18.3
 pyasn1==0.4.5
 pyasn1-modules==0.2.4
 pyfiglet==0.8.post1