diff --git a/examples/client/go.mod b/examples/client/go.mod
index 09aea87..02eb278 100644
--- a/examples/client/go.mod
+++ b/examples/client/go.mod
@@ -4,7 +4,7 @@ replace github.com/openfeed-org/sdk-go => ../../
 
 require (
 	github.com/openfeed-org/sdk-go v0.1.7
-	google.golang.org/protobuf v1.28.1
+	google.golang.org/protobuf v1.33.0
 )
 
 go 1.16
diff --git a/examples/client/go.sum b/examples/client/go.sum
index c583b4a..1bfed58 100644
--- a/examples/client/go.sum
+++ b/examples/client/go.sum
@@ -10,5 +10,6 @@ golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1 h1:go1bK/D/BFZV2I8cIQd1N
 golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 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 v1.28.1 h1:d0NfwRgPtno5B1Wa6L2DAG+KivqkdutMf1UhdNx175w=
 google.golang.org/protobuf v1.28.1/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=