diff --git a/requirements.txt b/requirements.txt
index b456bc1..c71281e 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -38,7 +38,7 @@ oauthlib==3.2.0
 paho-mqtt==1.6.1
 passlib==1.7.4
 pbr==5.8.0
-protobuf==3.19.4
+protobuf==3.19.5
 pyasn1==0.4.8
 pyasn1-modules==0.2.8
 pycparser==2.21