diff --git a/Godeps/Godeps.json b/Godeps/Godeps.json
index ee26a08..77a58e9 100644
--- a/Godeps/Godeps.json
+++ b/Godeps/Godeps.json
@@ -15,7 +15,7 @@
 		},
 		{
 			"ImportPath": "github.com/coreos/yaml",
-			"Rev": "9f9df34309c04878acc86042b16630b0f696e1de"
+			"Rev": "6b16a5714269b2f70720a45406b1babd947a17ef"
 		},
 		{
 			"ImportPath": "github.com/dotcloud/docker/pkg/netlink",
diff --git a/Godeps/_workspace/src/github.com/coreos/yaml/README.md b/Godeps/_workspace/src/github.com/coreos/yaml/README.md
index af07056..4427005 100644
--- a/Godeps/_workspace/src/github.com/coreos/yaml/README.md
+++ b/Godeps/_workspace/src/github.com/coreos/yaml/README.md
@@ -1,3 +1,6 @@
+Note: This is a fork of https://github.com/go-yaml/yaml. The following README
+doesn't necessarily apply to this fork.
+
 # YAML support for the Go language
 
 Introduction
diff --git a/Godeps/_workspace/src/github.com/coreos/yaml/decode.go b/Godeps/_workspace/src/github.com/coreos/yaml/decode.go
index a098626..e219d4b 100644
--- a/Godeps/_workspace/src/github.com/coreos/yaml/decode.go
+++ b/Godeps/_workspace/src/github.com/coreos/yaml/decode.go
@@ -30,13 +30,15 @@ type node struct {
 // Parser, produces a node tree out of a libyaml event stream.
 
 type parser struct {
-	parser yaml_parser_t
-	event  yaml_event_t
-	doc    *node
+	parser    yaml_parser_t
+	event     yaml_event_t
+	doc       *node
+	transform transformString
 }
 
-func newParser(b []byte) *parser {
-	p := parser{}
+func newParser(b []byte, t transformString) *parser {
+	p := parser{transform: t}
+
 	if !yaml_parser_initialize(&p.parser) {
 		panic("Failed to initialize YAML emitter")
 	}
@@ -175,7 +177,10 @@ func (p *parser) mapping() *node {
 	p.anchor(n, p.event.anchor)
 	p.skip()
 	for p.event.typ != yaml_MAPPING_END_EVENT {
-		n.children = append(n.children, p.parse(), p.parse())
+		key := p.parse()
+		key.value = p.transform(key.value)
+		value := p.parse()
+		n.children = append(n.children, key, value)
 	}
 	p.skip()
 	return n
diff --git a/Godeps/_workspace/src/github.com/coreos/yaml/decode_test.go b/Godeps/_workspace/src/github.com/coreos/yaml/decode_test.go
index ef3d37f..349bee7 100644
--- a/Godeps/_workspace/src/github.com/coreos/yaml/decode_test.go
+++ b/Godeps/_workspace/src/github.com/coreos/yaml/decode_test.go
@@ -1,8 +1,8 @@
 package yaml_test
 
 import (
+	"github.com/coreos/yaml"
 	. "gopkg.in/check.v1"
-	"gopkg.in/yaml.v1"
 	"math"
 	"reflect"
 	"strings"
@@ -557,6 +557,23 @@ func (s *S) TestUnmarshalWithFalseSetterIgnoresValue(c *C) {
 	c.Assert(m["ghi"].value, Equals, 3)
 }
 
+func (s *S) TestUnmarshalWithTransform(c *C) {
+	data := `{a_b: 1, c-d: 2, e-f_g: 3, h_i-j: 4}`
+	expect := map[string]int{
+		"a_b":   1,
+		"c_d":   2,
+		"e_f_g": 3,
+		"h_i_j": 4,
+	}
+	m := map[string]int{}
+	yaml.UnmarshalMappingKeyTransform = func(i string) string {
+		return strings.Replace(i, "-", "_", -1)
+	}
+	err := yaml.Unmarshal([]byte(data), m)
+	c.Assert(err, IsNil)
+	c.Assert(m, DeepEquals, expect)
+}
+
 // From http://yaml.org/type/merge.html
 var mergeTests = `
 anchors:
diff --git a/Godeps/_workspace/src/github.com/coreos/yaml/encode_test.go b/Godeps/_workspace/src/github.com/coreos/yaml/encode_test.go
index c9febc2..2cd0ea7 100644
--- a/Godeps/_workspace/src/github.com/coreos/yaml/encode_test.go
+++ b/Godeps/_workspace/src/github.com/coreos/yaml/encode_test.go
@@ -7,8 +7,8 @@ import (
 	"strings"
 	"time"
 
+	"github.com/coreos/yaml"
 	. "gopkg.in/check.v1"
-	"gopkg.in/yaml.v1"
 )
 
 var marshalIntTest = 123
diff --git a/Godeps/_workspace/src/github.com/coreos/yaml/yaml.go b/Godeps/_workspace/src/github.com/coreos/yaml/yaml.go
index f1c390e..16e1365 100644
--- a/Godeps/_workspace/src/github.com/coreos/yaml/yaml.go
+++ b/Godeps/_workspace/src/github.com/coreos/yaml/yaml.go
@@ -84,7 +84,7 @@ type Getter interface {
 func Unmarshal(in []byte, out interface{}) (err error) {
 	defer handleErr(&err)
 	d := newDecoder()
-	p := newParser(in)
+	p := newParser(in, UnmarshalMappingKeyTransform)
 	defer p.destroy()
 	node := p.parse()
 	if node != nil {
@@ -146,6 +146,17 @@ func Marshal(in interface{}) (out []byte, err error) {
 	return
 }
 
+// UnmarshalMappingKeyTransform is a string transformation that is applied to
+// each mapping key in a YAML document before it is unmarshalled. By default,
+// UnmarshalMappingKeyTransform is an identity transform (no modification).
+var UnmarshalMappingKeyTransform transformString = identityTransform
+
+type transformString func(in string) (out string)
+
+func identityTransform(in string) (out string) {
+	return in
+}
+
 // --------------------------------------------------------------------------
 // Maintain a mapping of keys to structure field indexes