diff --git a/go.mod b/go.mod
index 81c01fc..c8e512f 100644
--- a/go.mod
+++ b/go.mod
@@ -7,7 +7,7 @@ require (
 	github.com/gofrs/uuid v3.2.0+incompatible // indirect
 	github.com/gogo/protobuf v1.2.1
 	github.com/golang/protobuf v1.3.2
-	github.com/grpc-ecosystem/grpc-gateway v1.9.6
+	github.com/grpc-ecosystem/grpc-gateway v1.11.3
 	github.com/izumin5210/grapi v0.5.0
 	github.com/kat-co/vala v0.0.0-20170210184112-42e1d8b61f12
 	github.com/lib/pq v1.2.0
diff --git a/go.sum b/go.sum
index ad15b09..ee924c3 100644
--- a/go.sum
+++ b/go.sum
@@ -48,6 +48,8 @@ github.com/grpc-ecosystem/go-grpc-middleware v1.0.0/go.mod h1:FiyG127CGDf3tlThmg
 github.com/grpc-ecosystem/grpc-gateway v1.8.5/go.mod h1:vNeuVxBJEsws4ogUvrchl83t/GYV9WGTSLVdBhOQFDY=
 github.com/grpc-ecosystem/grpc-gateway v1.9.6 h1:8p0pcgLlw2iuZVsdHdPaMUXFOA+6gDixcXbHEMzSyW8=
 github.com/grpc-ecosystem/grpc-gateway v1.9.6/go.mod h1:vNeuVxBJEsws4ogUvrchl83t/GYV9WGTSLVdBhOQFDY=
+github.com/grpc-ecosystem/grpc-gateway v1.11.3 h1:h8+NsYENhxNTuq+dobk3+ODoJtwY4Fu0WQXsxJfL8aM=
+github.com/grpc-ecosystem/grpc-gateway v1.11.3/go.mod h1:vNeuVxBJEsws4ogUvrchl83t/GYV9WGTSLVdBhOQFDY=
 github.com/hashicorp/hcl v1.0.0 h1:0Anlzjpi4vEasTeNFn2mLJgTSwt0+6sfsiTG8qcWGx4=
 github.com/hashicorp/hcl v1.0.0/go.mod h1:E5yfLk+7swimpb2L/Alb/PJmXilQ/rhwaUYs4T20WEQ=
 github.com/hpcloud/tail v1.0.0/go.mod h1:ab1qPbhIpdTxEkNHXyeSf5vhxWSCs/tWer42PpOxQnU=