diff --git a/vendor/github.com/prometheus/common/expfmt/decode.go b/vendor/github.com/prometheus/common/expfmt/decode.go
index 68a894445..7210c92fa 100644
--- a/vendor/github.com/prometheus/common/expfmt/decode.go
+++ b/vendor/github.com/prometheus/common/expfmt/decode.go
@@ -36,7 +36,7 @@ type DecodeOptions struct {
 	Timestamp model.Time
 }
 
-// NewDecor returns a new decoder based on the HTTP header.
+// NewDecoder returns a new decoder based on the HTTP header.
 func NewDecoder(r io.Reader, h http.Header) (Decoder, error) {
 	ct := h.Get(hdrContentType)
 
@@ -135,7 +135,7 @@ func ExtractSamples(o *DecodeOptions, fams ...*dto.MetricFamily) model.Vector {
 }
 
 func extractSamples(f *dto.MetricFamily, o *DecodeOptions) model.Vector {
-	switch *f.Type {
+	switch f.GetType() {
 	case dto.MetricType_COUNTER:
 		return extractCounter(o, f)
 	case dto.MetricType_GAUGE:
diff --git a/vendor/github.com/prometheus/common/expfmt/fuzz.go b/vendor/github.com/prometheus/common/expfmt/fuzz.go
new file mode 100644
index 000000000..14f920146
--- /dev/null
+++ b/vendor/github.com/prometheus/common/expfmt/fuzz.go
@@ -0,0 +1,36 @@
+// Copyright 2014 The Prometheus Authors
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+// Build only when actually fuzzing
+// +build gofuzz
+
+package expfmt
+
+import "bytes"
+
+// Fuzz text metric parser with with github.com/dvyukov/go-fuzz:
+//
+//     go-fuzz-build github.com/prometheus/client_golang/text
+//     go-fuzz -bin text-fuzz.zip -workdir fuzz
+//
+// Further input samples should go in the folder fuzz/corpus.
+func Fuzz(in []byte) int {
+	parser := TextParser{}
+	_, err := parser.TextToMetricFamilies(bytes.NewReader(in))
+
+	if err != nil {
+		return 0
+	}
+
+	return 1
+}
diff --git a/vendor/vendor.json b/vendor/vendor.json
index 2f64f88e9..b20d1793e 100644
--- a/vendor/vendor.json
+++ b/vendor/vendor.json
@@ -74,8 +74,8 @@
 		},
 		{
 			"path": "github.com/prometheus/common/expfmt",
-			"revision": "c33395bbc758c8d25735ec7036d66b342084ae35",
-			"revisionTime": "2015-08-25T14:37:19+02:00"
+			"revision": "e5bcf05f3c1b99df9892e773349e88d038f0e93c",
+			"revisionTime": "2015-09-17T12:22:22+02:00"
 		},
 		{
 			"path": "github.com/prometheus/common/model",
@@ -173,4 +173,4 @@
 			"revisionTime": "2015-06-24T11:29:02+01:00"
 		}
 	]
-}
+}
\ No newline at end of file