diff --git a/pfcpiface/go.mod b/pfcpiface/go.mod
index c5d68ce6c..71f901d52 100644
--- a/pfcpiface/go.mod
+++ b/pfcpiface/go.mod
@@ -11,6 +11,6 @@ require (
 	github.com/prometheus/client_golang v1.11.0
 	github.com/wmnsk/go-pfcp v0.0.9-0.20210129064645-e1b1f34ebd9f
 	google.golang.org/genproto v0.0.0-20200526211855-cb27e3aa2013
-	google.golang.org/grpc v1.39.0
+	google.golang.org/grpc v1.39.1
 	google.golang.org/protobuf v1.27.1
 )
diff --git a/pfcpiface/go.sum b/pfcpiface/go.sum
index 35ecd6d7e..7e7b1732d 100644
--- a/pfcpiface/go.sum
+++ b/pfcpiface/go.sum
@@ -229,8 +229,8 @@ google.golang.org/grpc v1.28.1/go.mod h1:rpkK4SK4GF4Ach/+MFLZUBavHOvF2JJB5uozKKa
 google.golang.org/grpc v1.29.1/go.mod h1:itym6AZVZYACWQqET3MqgPpjcuV5QH3BxFS3IjizoKk=
 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 v1.39.0 h1:Klz8I9kdtkIN6EpHHUOMLCYhTn/2WAe5a0s1hcBkdTI=
-google.golang.org/grpc v1.39.0/go.mod h1:PImNr+rS9TWYb2O4/emRugxiyHZ5JyHW5F+RPnDzfrE=
+google.golang.org/grpc v1.39.1 h1:f37vZbBVTiJ6jKG5mWz8ySOBxNqy6ViPgyhSdVnxF3E=
+google.golang.org/grpc v1.39.1/go.mod h1:PImNr+rS9TWYb2O4/emRugxiyHZ5JyHW5F+RPnDzfrE=
 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=
diff --git a/pfcpiface/vendor/google.golang.org/grpc/internal/transport/http2_client.go b/pfcpiface/vendor/google.golang.org/grpc/internal/transport/http2_client.go
index d10b6aacb..17fc4503c 100644
--- a/pfcpiface/vendor/google.golang.org/grpc/internal/transport/http2_client.go
+++ b/pfcpiface/vendor/google.golang.org/grpc/internal/transport/http2_client.go
@@ -1275,6 +1275,7 @@ func (t *http2Client) operateHeaders(frame *http2.MetaHeadersFrame) {
 		contentTypeErr string
 		grpcMessage    string
 		statusGen      *status.Status
+		recvCompress   string
 
 		httpStatus string
 		rawStatus  string
@@ -1292,7 +1293,7 @@ func (t *http2Client) operateHeaders(frame *http2.MetaHeadersFrame) {
 			mdata[hf.Name] = append(mdata[hf.Name], hf.Value)
 			isGRPC = true
 		case "grpc-encoding":
-			s.recvCompress = hf.Value
+			recvCompress = hf.Value
 		case "grpc-status":
 			rawStatus = hf.Value
 		case "grpc-message":
@@ -1384,6 +1385,7 @@ func (t *http2Client) operateHeaders(frame *http2.MetaHeadersFrame) {
 			// These values can be set without any synchronization because
 			// stream goroutine will read it only after seeing a closed
 			// headerChan which we'll close after setting this.
+			s.recvCompress = recvCompress
 			if len(mdata) > 0 {
 				s.header = mdata
 			}
diff --git a/pfcpiface/vendor/google.golang.org/grpc/server.go b/pfcpiface/vendor/google.golang.org/grpc/server.go
index d90f3fcd3..4f2876c2c 100644
--- a/pfcpiface/vendor/google.golang.org/grpc/server.go
+++ b/pfcpiface/vendor/google.golang.org/grpc/server.go
@@ -863,6 +863,7 @@ func (s *Server) handleRawConn(lisAddr string, rawConn net.Conn) {
 	// Finish handshaking (HTTP2)
 	st := s.newHTTP2Transport(conn, authInfo)
 	if st == nil {
+		conn.Close()
 		return
 	}
 
diff --git a/pfcpiface/vendor/google.golang.org/grpc/version.go b/pfcpiface/vendor/google.golang.org/grpc/version.go
index 3dd146afb..3495d3866 100644
--- a/pfcpiface/vendor/google.golang.org/grpc/version.go
+++ b/pfcpiface/vendor/google.golang.org/grpc/version.go
@@ -19,4 +19,4 @@
 package grpc
 
 // Version is the current grpc version.
-const Version = "1.39.0"
+const Version = "1.39.1"
diff --git a/pfcpiface/vendor/modules.txt b/pfcpiface/vendor/modules.txt
index 98817918f..d6f07db22 100644
--- a/pfcpiface/vendor/modules.txt
+++ b/pfcpiface/vendor/modules.txt
@@ -60,7 +60,7 @@ golang.org/x/text/unicode/norm
 # google.golang.org/genproto v0.0.0-20200526211855-cb27e3aa2013
 google.golang.org/genproto/googleapis/rpc/code
 google.golang.org/genproto/googleapis/rpc/status
-# google.golang.org/grpc v1.39.0
+# google.golang.org/grpc v1.39.1
 google.golang.org/grpc
 google.golang.org/grpc/attributes
 google.golang.org/grpc/backoff