diff --git a/examples/ext_authz/auth/grpc-service/go.mod b/examples/ext_authz/auth/grpc-service/go.mod
index d481ed7ae3036..ee20aff37b308 100644
--- a/examples/ext_authz/auth/grpc-service/go.mod
+++ b/examples/ext_authz/auth/grpc-service/go.mod
@@ -6,5 +6,5 @@ require (
 	github.com/envoyproxy/go-control-plane v0.10.2-0.20220325020618-49ff273808a1
 	github.com/golang/protobuf v1.5.2
 	google.golang.org/genproto v0.0.0-20200526211855-cb27e3aa2013
-	google.golang.org/grpc v1.47.0
+	google.golang.org/grpc v1.48.0
 )
diff --git a/examples/ext_authz/auth/grpc-service/go.sum b/examples/ext_authz/auth/grpc-service/go.sum
index 28813482ff024..8d7760aa073d0 100644
--- a/examples/ext_authz/auth/grpc-service/go.sum
+++ b/examples/ext_authz/auth/grpc-service/go.sum
@@ -107,8 +107,8 @@ google.golang.org/grpc v1.25.1/go.mod h1:c3i+UQWmh7LiEpx4sFZnkU36qjEYZ0imhYfXVyQ
 google.golang.org/grpc v1.27.0/go.mod h1:qbnxyOmOxrQa7FizSgH+ReBfzJrCY1pSN7KXBS8abTk=
 google.golang.org/grpc v1.33.1/go.mod h1:fr5YgcSWrqhRRxogOsw7RzIpsmvOZ6IcH4kBYTpR3n0=
 google.golang.org/grpc v1.36.0/go.mod h1:qjiiYl8FncCW8feJPdyg3v6XW24KsRHe+dy9BAGRRjU=
-google.golang.org/grpc v1.47.0 h1:9n77onPX5F3qfFCqjy9dhn8PbNQsIKeVU04J9G7umt8=
-google.golang.org/grpc v1.47.0/go.mod h1:vN9eftEi1UMyUsIF80+uQXhHjbXYbm0uXoFCACuMGWk=
+google.golang.org/grpc v1.48.0 h1:rQOsyJ/8+ufEDJd/Gdsz7HG220Mh9HAhFHRGnIjda0w=
+google.golang.org/grpc v1.48.0/go.mod h1:vN9eftEi1UMyUsIF80+uQXhHjbXYbm0uXoFCACuMGWk=
 google.golang.org/protobuf v0.0.0-20200109180630-ec00e32a8dfd/go.mod h1:DFci5gLYBciE7Vtevhsrf46CRTquxDuWsQurQQe4oz8=
 google.golang.org/protobuf v0.0.0-20200221191635-4d8936d0db64/go.mod h1:kwYJMbMJ01Woi6D6+Kah6886xMZcty6N08ah7+eCXa0=
 google.golang.org/protobuf v0.0.0-20200228230310-ab0ca4ff8a60/go.mod h1:cfTl7dwQJ+fmap5saPgwCLgHXTUD7jkjRqWcaiX5VyM=