diff --git a/vendor/github.com/prometheus/common/model/time.go b/vendor/github.com/prometheus/common/model/time.go
index 548968aeb..7e87f1ac6 100644
--- a/vendor/github.com/prometheus/common/model/time.go
+++ b/vendor/github.com/prometheus/common/model/time.go
@@ -163,9 +163,21 @@ func (t *Time) UnmarshalJSON(b []byte) error {
 // This type should not propagate beyond the scope of input/output processing.
 type Duration time.Duration
 
+// Set implements pflag/flag.Value
+func (d *Duration) Set(s string) error {
+	var err error
+	*d, err = ParseDuration(s)
+	return err
+}
+
+// Type implements pflag.Value
+func (d *Duration) Type() string {
+	return "duration"
+}
+
 var durationRE = regexp.MustCompile("^([0-9]+)(y|w|d|h|m|s|ms)$")
 
-// StringToDuration parses a string into a time.Duration, assuming that a year
+// ParseDuration parses a string into a time.Duration, assuming that a year
 // always has 365d, a week always has 7d, and a day always has 24h.
 func ParseDuration(durationStr string) (Duration, error) {
 	matches := durationRE.FindStringSubmatch(durationStr)
diff --git a/vendor/vendor.json b/vendor/vendor.json
index 6130698c5..f513d31df 100644
--- a/vendor/vendor.json
+++ b/vendor/vendor.json
@@ -727,10 +727,10 @@
 			"revisionTime": "2017-06-16T09:39:39Z"
 		},
 		{
-			"checksumSHA1": "0LL9u9tfv1KPBjNEiMDP6q7lpog=",
+			"checksumSHA1": "3VoqH7TFfzA6Ds0zFzIbKCUvBmw=",
 			"path": "github.com/prometheus/common/model",
-			"revision": "9e0844febd9e2856f839c9cb974fbd676d1755a8",
-			"revisionTime": "2017-04-18T15:52:10Z"
+			"revision": "0d0c3d572886e0f2323ed376557f9eb99b97d25b",
+			"revisionTime": "2017-06-16T14:41:04Z"
 		},
 		{
 			"checksumSHA1": "9aDxDuzZt1l7FQJ9qpn2kPcF7NU=",