diff --git a/examples/grpc-skeleton/go.mod b/examples/grpc-skeleton/go.mod
index d486186..948dea6 100644
--- a/examples/grpc-skeleton/go.mod
+++ b/examples/grpc-skeleton/go.mod
@@ -14,7 +14,7 @@ require (
 	github.com/spf13/viper v1.15.0
 	go.uber.org/zap v1.24.0
 	google.golang.org/grpc v1.56.3
-	google.golang.org/protobuf v1.30.0
+	google.golang.org/protobuf v1.33.0
 	gopkg.in/natefinch/lumberjack.v2 v2.2.1
 	gorm.io/driver/mysql v1.5.0
 	gorm.io/gorm v1.25.0
diff --git a/examples/grpc-skeleton/go.sum b/examples/grpc-skeleton/go.sum
index e4f43ce..552e165 100644
--- a/examples/grpc-skeleton/go.sum
+++ b/examples/grpc-skeleton/go.sum
@@ -917,8 +917,8 @@ google.golang.org/protobuf v1.24.0/go.mod h1:r/3tXBNzIEhYS9I1OUVjXDlt8tc493IdKGj
 google.golang.org/protobuf v1.25.0/go.mod h1:9JNX74DMeImyA3h4bdi1ymwjUzf21/xIlbajtzgsN7c=
 google.golang.org/protobuf v1.26.0-rc.1/go.mod h1:jlhhOSvTdKEhbULTjvd4ARK9grFBp09yW+WbY/TyQbw=
 google.golang.org/protobuf v1.26.0/go.mod h1:9q0QmTI4eRPtz6boOQmLYwt+qCgq0jsYwAQnmE0givc=
-google.golang.org/protobuf v1.30.0 h1:kPPoIgf3TsEvrm0PFe15JQ+570QVxYzEvvHqChK+cng=
-google.golang.org/protobuf v1.30.0/go.mod h1:HV8QOd/L58Z+nl8r43ehVNZIU/HEI6OcFqwMG9pJV4I=
+google.golang.org/protobuf v1.33.0 h1:uNO2rsAINq/JlFpSdYEKIZ0uKD/R9cpdv0T+yoGwGmI=
+google.golang.org/protobuf v1.33.0/go.mod h1:c6P6GXX6sHbq/GpV6MGZEdwhWPcYBgnhAHhKbcUYpos=
 gopkg.in/alecthomas/kingpin.v2 v2.2.6/go.mod h1:FMv+mEhP44yOT+4EoQTLFTRgOQ1FBLkstjWtayDeSgw=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=