diff --git a/label_analyser/requirements.txt b/label_analyser/requirements.txt
index e98b75a..4008691 100644
--- a/label_analyser/requirements.txt
+++ b/label_analyser/requirements.txt
@@ -35,7 +35,7 @@ oauthlib==3.1.1
 opencv-python==4.5.2.54
 opt-einsum==3.3.0
 packaging==20.9
-protobuf==3.17.3
+protobuf==3.18.3
 pyasn1==0.4.8
 pyasn1-modules==0.2.8
 pyparsing==2.4.7