diff --git a/code/lambda/kds_timestream_buf_sess/go.mod b/code/lambda/kds_timestream_buf_sess/go.mod
index a35b8f6..3087830 100644
--- a/code/lambda/kds_timestream_buf_sess/go.mod
+++ b/code/lambda/kds_timestream_buf_sess/go.mod
@@ -8,7 +8,7 @@ require (
 	github.com/aws/aws-sdk-go v1.44.199
 	github.com/awslabs/kinesis-aggregation/go v0.0.0-20220926094605-e6e1da9b7b9b
 	github.com/go-kit/kit v0.12.0
-	github.com/golang/protobuf v1.5.2
+	github.com/golang/protobuf v1.5.3
 	github.com/google/uuid v1.3.0
 	github.com/stretchr/testify v1.8.1
 )
diff --git a/code/lambda/kds_timestream_buf_sess/go.sum b/code/lambda/kds_timestream_buf_sess/go.sum
index 35ee3cd..807a6c6 100644
--- a/code/lambda/kds_timestream_buf_sess/go.sum
+++ b/code/lambda/kds_timestream_buf_sess/go.sum
@@ -18,8 +18,8 @@ github.com/go-logfmt/logfmt v0.5.1 h1:otpy5pqBCBZ1ng9RQ0dPu4PN7ba75Y/aA+UpowDyNV
 github.com/go-logfmt/logfmt v0.5.1/go.mod h1:WYhtIu8zTZfxdn5+rREduYbwxfcBr/Vr6KEVveWlfTs=
 github.com/golang/protobuf v1.3.1/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
 github.com/golang/protobuf v1.5.0/go.mod h1:FsONVRAS9T7sI+LIUmWTfcYkHO4aIWwzhcaSAoJOfIk=
-github.com/golang/protobuf v1.5.2 h1:ROPKBNFfQgOUMifHyP+KYbvpjbdoFNs+aK7DXlji0Tw=
-github.com/golang/protobuf v1.5.2/go.mod h1:XVQd3VNwM+JqD3oG2Ue2ip4fOMUkwXdXDdiuN0vRsmY=
+github.com/golang/protobuf v1.5.3 h1:KhyjKVUg7Usr/dYsdSqoFveMYd5ko72D+zANwlG1mmg=
+github.com/golang/protobuf v1.5.3/go.mod h1:XVQd3VNwM+JqD3oG2Ue2ip4fOMUkwXdXDdiuN0vRsmY=
 github.com/google/go-cmp v0.5.5 h1:Khx7svrCpmxxtHBq5j2mp/xVjsi8hQMfNLvJFAlrGgU=
 github.com/google/go-cmp v0.5.5/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
 github.com/google/uuid v1.3.0 h1:t6JiXgmwXMjEs8VusXIJk2BXHsn+wx8BZdTaoZ5fu7I=