diff --git a/vendor/github.com/hashicorp/go-hclog/int.go b/vendor/github.com/hashicorp/go-hclog/int.go
index 8b13493f8..340cfdffd 100644
--- a/vendor/github.com/hashicorp/go-hclog/int.go
+++ b/vendor/github.com/hashicorp/go-hclog/int.go
@@ -274,6 +274,8 @@ func (z *intLogger) logJson(t time.Time, level Level, msg string, args ...interf
 		}
 	}
 
+	args = append(z.implied, args...)
+
 	if args != nil && len(args) > 0 {
 		if len(args)%2 != 0 {
 			cs, ok := args[len(args)-1].(CapturedStacktrace)
@@ -368,6 +370,8 @@ func (z *intLogger) IsError() bool {
 func (z *intLogger) With(args ...interface{}) Logger {
 	var nz intLogger = *z
 
+	nz.implied = make([]interface{}, 0, len(z.implied)+len(args))
+	nz.implied = append(nz.implied, z.implied...)
 	nz.implied = append(nz.implied, args...)
 
 	return &nz
diff --git a/vendor/github.com/hashicorp/go-plugin/client.go b/vendor/github.com/hashicorp/go-plugin/client.go
index b3e3b78ea..fce0614f1 100644
--- a/vendor/github.com/hashicorp/go-plugin/client.go
+++ b/vendor/github.com/hashicorp/go-plugin/client.go
@@ -10,7 +10,6 @@ import (
 	"hash"
 	"io"
 	"io/ioutil"
-	"log"
 	"net"
 	"os"
 	"os/exec"
@@ -234,7 +233,6 @@ func CleanupClients() {
 	}
 	managedClientsLock.Unlock()
 
-	log.Println("[DEBUG] plugin: waiting for all plugin processes to complete...")
 	wg.Wait()
 }
 
@@ -753,14 +751,14 @@ func (c *Client) dialer(_ string, timeout time.Duration) (net.Conn, error) {
 
 func (c *Client) logStderr(r io.Reader) {
 	bufR := bufio.NewReader(r)
+	l := c.logger.Named(filepath.Base(c.config.Cmd.Path))
+
 	for {
 		line, err := bufR.ReadString('\n')
 		if line != "" {
 			c.config.Stderr.Write([]byte(line))
 			line = strings.TrimRightFunc(line, unicode.IsSpace)
 
-			l := c.logger.Named(filepath.Base(c.config.Cmd.Path))
-
 			entry, err := parseJSON(line)
 			// If output is not JSON format, print directly to Debug
 			if err != nil {
@@ -768,7 +766,7 @@ func (c *Client) logStderr(r io.Reader) {
 			} else {
 				out := flattenKVPairs(entry.KVPairs)
 
-				l = l.With("timestamp", entry.Timestamp.Format(hclog.TimeFormat))
+				out = append(out, "timestamp", entry.Timestamp.Format(hclog.TimeFormat))
 				switch hclog.LevelFromString(entry.Level) {
 				case hclog.Trace:
 					l.Trace(entry.Message, out...)
diff --git a/vendor/vendor.json b/vendor/vendor.json
index 582c4b2a9..52bb2e542 100644
--- a/vendor/vendor.json
+++ b/vendor/vendor.json
@@ -1087,10 +1087,10 @@
 			"revisionTime": "2018-02-23T19:15:17Z"
 		},
 		{
-			"checksumSHA1": "xTdKLI1gAJOTqswvr15a/fI8ucA=",
+			"checksumSHA1": "fg18dhgqDts2CI/Dz+6v5jX/xow=",
 			"path": "github.com/hashicorp/go-hclog",
-			"revision": "5bcb0f17e36442247290887cc914a6e507afa5c4",
-			"revisionTime": "2018-01-22T23:24:01Z"
+			"revision": "9b9aacd44f1c18bbf913afa45ecd1cb8ec515713",
+			"revisionTime": "2018-04-02T16:24:28Z"
 		},
 		{
 			"checksumSHA1": "y+AeKVZoX0gB+DZW4Arzkb3tTVc=",
@@ -1117,10 +1117,10 @@
 			"revisionTime": "2017-12-04T18:29:08Z"
 		},
 		{
-			"checksumSHA1": "7SheX5w6+xGsTMxPI3LiJx0iz7s=",
+			"checksumSHA1": "lbG9uwM7qJlTIBg+8mjCC88sCPc=",
 			"path": "github.com/hashicorp/go-plugin",
-			"revision": "baa83ead6ff956b3f99bcd609ae3499c028e019e",
-			"revisionTime": "2018-02-16T15:44:16Z"
+			"revision": "e8d22c780116115ae5624720c9af0c97afe4f551",
+			"revisionTime": "2018-03-31T00:25:53Z"
 		},
 		{
 			"checksumSHA1": "yzoWV7yrS/TvOrKy5ZrdUjsYaOA=",