diff --git a/requirements.txt b/requirements.txt
index 22b02ee..544ec9f 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -21,7 +21,7 @@ numpy==1.16.2
 opencv-python==4.1.0.25
 pbr==5.1.3
 Pillow>=6.2.0
-protobuf==3.7.1
+protobuf==3.18.3
 pycparser==2.19
 pyparsing==2.4.0
 python-dateutil==2.8.0