diff --git a/vendor/google.golang.org/grpc/grpclog/grpclog.go b/vendor/google.golang.org/grpc/grpclog/grpclog.go
index c8bb2be..874ea6d 100644
--- a/vendor/google.golang.org/grpc/grpclog/grpclog.go
+++ b/vendor/google.golang.org/grpc/grpclog/grpclog.go
@@ -26,70 +26,64 @@
 // verbosity level can be set by GRPC_GO_LOG_VERBOSITY_LEVEL.
 package grpclog // import "google.golang.org/grpc/grpclog"
 
-import (
-	"os"
+import "os"
 
-	"google.golang.org/grpc/internal/grpclog"
-)
-
-func init() {
-	SetLoggerV2(newLoggerV2())
-}
+var logger = newLoggerV2()
 
 // V reports whether verbosity level l is at least the requested verbose level.
 func V(l int) bool {
-	return grpclog.Logger.V(l)
+	return logger.V(l)
 }
 
 // Info logs to the INFO log.
 func Info(args ...interface{}) {
-	grpclog.Logger.Info(args...)
+	logger.Info(args...)
 }
 
 // Infof logs to the INFO log. Arguments are handled in the manner of fmt.Printf.
 func Infof(format string, args ...interface{}) {
-	grpclog.Logger.Infof(format, args...)
+	logger.Infof(format, args...)
 }
 
 // Infoln logs to the INFO log. Arguments are handled in the manner of fmt.Println.
 func Infoln(args ...interface{}) {
-	grpclog.Logger.Infoln(args...)
+	logger.Infoln(args...)
 }
 
 // Warning logs to the WARNING log.
 func Warning(args ...interface{}) {
-	grpclog.Logger.Warning(args...)
+	logger.Warning(args...)
 }
 
 // Warningf logs to the WARNING log. Arguments are handled in the manner of fmt.Printf.
 func Warningf(format string, args ...interface{}) {
-	grpclog.Logger.Warningf(format, args...)
+	logger.Warningf(format, args...)
 }
 
 // Warningln logs to the WARNING log. Arguments are handled in the manner of fmt.Println.
 func Warningln(args ...interface{}) {
-	grpclog.Logger.Warningln(args...)
+	logger.Warningln(args...)
 }
 
 // Error logs to the ERROR log.
 func Error(args ...interface{}) {
-	grpclog.Logger.Error(args...)
+	logger.Error(args...)
 }
 
 // Errorf logs to the ERROR log. Arguments are handled in the manner of fmt.Printf.
 func Errorf(format string, args ...interface{}) {
-	grpclog.Logger.Errorf(format, args...)
+	logger.Errorf(format, args...)
 }
 
 // Errorln logs to the ERROR log. Arguments are handled in the manner of fmt.Println.
 func Errorln(args ...interface{}) {
-	grpclog.Logger.Errorln(args...)
+	logger.Errorln(args...)
 }
 
 // Fatal logs to the FATAL log. Arguments are handled in the manner of fmt.Print.
 // It calls os.Exit() with exit code 1.
 func Fatal(args ...interface{}) {
-	grpclog.Logger.Fatal(args...)
+	logger.Fatal(args...)
 	// Make sure fatal logs will exit.
 	os.Exit(1)
 }
@@ -97,7 +91,7 @@
 // Fatalf logs to the FATAL log. Arguments are handled in the manner of fmt.Printf.
 // It calls os.Exit() with exit code 1.
 func Fatalf(format string, args ...interface{}) {
-	grpclog.Logger.Fatalf(format, args...)
+	logger.Fatalf(format, args...)
 	// Make sure fatal logs will exit.
 	os.Exit(1)
 }
@@ -105,7 +99,7 @@
 // Fatalln logs to the FATAL log. Arguments are handled in the manner of fmt.Println.
 // It calle os.Exit()) with exit code 1.
 func Fatalln(args ...interface{}) {
-	grpclog.Logger.Fatalln(args...)
+	logger.Fatalln(args...)
 	// Make sure fatal logs will exit.
 	os.Exit(1)
 }
@@ -114,19 +108,19 @@
 //
 // Deprecated: use Info.
 func Print(args ...interface{}) {
-	grpclog.Logger.Info(args...)
+	logger.Info(args...)
 }
 
 // Printf prints to the logger. Arguments are handled in the manner of fmt.Printf.
 //
 // Deprecated: use Infof.
 func Printf(format string, args ...interface{}) {
-	grpclog.Logger.Infof(format, args...)
+	logger.Infof(format, args...)
 }
 
 // Println prints to the logger. Arguments are handled in the manner of fmt.Println.
 //
 // Deprecated: use Infoln.
 func Println(args ...interface{}) {
-	grpclog.Logger.Infoln(args...)
+	logger.Infoln(args...)
 }
diff --git a/vendor/google.golang.org/grpc/grpclog/logger.go b/vendor/google.golang.org/grpc/grpclog/logger.go
index ef06a48..097494f 100644
--- a/vendor/google.golang.org/grpc/grpclog/logger.go
+++ b/vendor/google.golang.org/grpc/grpclog/logger.go
@@ -18,8 +18,6 @@
 
 package grpclog
 
-import "google.golang.org/grpc/internal/grpclog"
-
 // Logger mimics golang's standard Logger as an interface.
 //
 // Deprecated: use LoggerV2.
@@ -37,7 +35,7 @@
 //
 // Deprecated: use SetLoggerV2.
 func SetLogger(l Logger) {
-	grpclog.Logger = &loggerWrapper{Logger: l}
+	logger = &loggerWrapper{Logger: l}
 }
 
 // loggerWrapper wraps Logger into a LoggerV2.
diff --git a/vendor/google.golang.org/grpc/grpclog/loggerv2.go b/vendor/google.golang.org/grpc/grpclog/loggerv2.go
index 23612b7..d493257 100644
--- a/vendor/google.golang.org/grpc/grpclog/loggerv2.go
+++ b/vendor/google.golang.org/grpc/grpclog/loggerv2.go
@@ -24,8 +24,6 @@
 	"log"
 	"os"
 	"strconv"
-
-	"google.golang.org/grpc/internal/grpclog"
 )
 
 // LoggerV2 does underlying logging work for grpclog.
@@ -67,8 +65,7 @@
 // SetLoggerV2 sets logger that is used in grpc to a V2 logger.
 // Not mutex-protected, should be called before any gRPC functions.
 func SetLoggerV2(l LoggerV2) {
-	grpclog.Logger = l
-	grpclog.DepthLogger, _ = l.(grpclog.DepthLoggerV2)
+	logger = l
 }
 
 const (
@@ -196,19 +193,3 @@
 func (g *loggerT) V(l int) bool {
 	return l <= g.v
 }
-
-// DepthLoggerV2 logs at a specified call frame. If a LoggerV2 also implements
-// DepthLoggerV2, the below functions will be called with the appropriate stack
-// depth set for trivial functions the logger may ignore.
-//
-// This API is EXPERIMENTAL.
-type DepthLoggerV2 interface {
-	// InfoDepth logs to INFO log at the specified depth. Arguments are handled in the manner of fmt.Print.
-	InfoDepth(depth int, args ...interface{})
-	// WarningDepth logs to WARNING log at the specified depth. Arguments are handled in the manner of fmt.Print.
-	WarningDepth(depth int, args ...interface{})
-	// ErrorDetph logs to ERROR log at the specified depth. Arguments are handled in the manner of fmt.Print.
-	ErrorDepth(depth int, args ...interface{})
-	// FatalDepth logs to FATAL log at the specified depth. Arguments are handled in the manner of fmt.Print.
-	FatalDepth(depth int, args ...interface{})
-}