diff --git a/api/requirements.txt b/api/requirements.txt
index f144fee..b391e02 100644
--- a/api/requirements.txt
+++ b/api/requirements.txt
@@ -18,7 +18,7 @@ MarkupSafe==2.1.1
 marshmallow==3.17.1
 oauthlib==3.2.0
 packaging==21.3
-protobuf==4.21.5
+protobuf==4.21.6
 pyasn1==0.4.8
 pyasn1-modules==0.2.8
 pyparsing==3.0.9