diff --git a/Godeps/Godeps.json b/Godeps/Godeps.json
index c02c75f12..a6be5849b 100644
--- a/Godeps/Godeps.json
+++ b/Godeps/Godeps.json
@@ -348,11 +348,11 @@
 		},
 		{
 			"ImportPath": "k8s.io/api",
-			"Rev": "43b1ad33cf6f"
+			"Rev": "5d8c3d1f60af"
 		},
 		{
 			"ImportPath": "k8s.io/apimachinery",
-			"Rev": "9c5262af35ca"
+			"Rev": "4ce4ee60b177"
 		},
 		{
 			"ImportPath": "k8s.io/gengo",
@@ -364,7 +364,7 @@
 		},
 		{
 			"ImportPath": "k8s.io/kube-openapi",
-			"Rev": "743ec37842bf"
+			"Rev": "30be4d16710a"
 		},
 		{
 			"ImportPath": "k8s.io/utils",
diff --git a/go.mod b/go.mod
index 6d6c7596a..7b72d628f 100644
--- a/go.mod
+++ b/go.mod
@@ -28,8 +28,8 @@ require (
 	golang.org/x/oauth2 v0.0.0-20190604053449-0f29369cfe45
 	golang.org/x/time v0.0.0-20190308202827-9d24e82272b4
 	google.golang.org/appengine v1.5.0 // indirect
-	k8s.io/api v0.0.0-20191107110442-43b1ad33cf6f
-	k8s.io/apimachinery v0.0.0-20191107082716-9c5262af35ca
+	k8s.io/api v0.0.0-20191108101507-5d8c3d1f60af
+	k8s.io/apimachinery v0.0.0-20191108101507-4ce4ee60b177
 	k8s.io/klog v1.0.0
 	k8s.io/utils v0.0.0-20191030222137-2b95a09bc58d
 	sigs.k8s.io/yaml v1.1.0
@@ -38,6 +38,6 @@ require (
 replace (
 	golang.org/x/sys => golang.org/x/sys v0.0.0-20190813064441-fde4db37ae7a
 	golang.org/x/tools => golang.org/x/tools v0.0.0-20190821162956-65e3620a7ae7
-	k8s.io/api => k8s.io/api v0.0.0-20191107110442-43b1ad33cf6f
-	k8s.io/apimachinery => k8s.io/apimachinery v0.0.0-20191107082716-9c5262af35ca
+	k8s.io/api => k8s.io/api v0.0.0-20191108101507-5d8c3d1f60af
+	k8s.io/apimachinery => k8s.io/apimachinery v0.0.0-20191108101507-4ce4ee60b177
 )
diff --git a/go.sum b/go.sum
index fd1815e8d..f7f1093c6 100644
--- a/go.sum
+++ b/go.sum
@@ -191,15 +191,15 @@ gopkg.in/yaml.v2 v2.2.4 h1:/eiJrUcujPVeJ3xlSWaiNi3uSVmDGBK1pDHUHAnao1I=
 gopkg.in/yaml.v2 v2.2.4/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 honnef.co/go/tools v0.0.0-20190102054323-c2f93a96b099/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
 honnef.co/go/tools v0.0.0-20190106161140-3f1c8253044a/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
-k8s.io/api v0.0.0-20191107110442-43b1ad33cf6f/go.mod h1:/24HivhMZ6CLcfc0Nk41go4k5jb5bBTAP+9UA293OCw=
-k8s.io/apimachinery v0.0.0-20191107082716-9c5262af35ca/go.mod h1:DJOb3m0kw91A0YaUsaoYChi4d7xVF84HLiuRCxGsV04=
+k8s.io/api v0.0.0-20191108101507-5d8c3d1f60af/go.mod h1:imUKtxJrdH7sLzxnW0ep/MClaxwk3jqcQByiz2y/424=
+k8s.io/apimachinery v0.0.0-20191108101507-4ce4ee60b177/go.mod h1:nEP/6rwhzfljWYGVS6pfyES3ipZTR19vzMnSM+ur3ho=
 k8s.io/gengo v0.0.0-20190128074634-0689ccc1d7d6/go.mod h1:ezvh/TsK7cY6rbqRK0oQQ8IAqLxYwwyPxAX1Pzy0ii0=
 k8s.io/klog v0.0.0-20181102134211-b9b56d5dfc92/go.mod h1:Gq+BEi5rUBO/HRz0bTSXDUcqjScdoY3a9IHpCEIOOfk=
 k8s.io/klog v0.3.0/go.mod h1:Gq+BEi5rUBO/HRz0bTSXDUcqjScdoY3a9IHpCEIOOfk=
 k8s.io/klog v1.0.0 h1:Pt+yjF5aB1xDSVbau4VsWe+dQNzA0qv1LlXdC2dF6Q8=
 k8s.io/klog v1.0.0/go.mod h1:4Bi6QPql/J/LkTDqv7R/cd3hPo4k2DG6Ptcz060Ez5I=
-k8s.io/kube-openapi v0.0.0-20190816220812-743ec37842bf h1:EYm5AW/UUDbnmnI+gK0TJDVK9qPLhM+sRHYanNKw0EQ=
-k8s.io/kube-openapi v0.0.0-20190816220812-743ec37842bf/go.mod h1:1TqjTSzOxsLGIKfj0lK8EeCP7K1iUG65v09OM0/WG5E=
+k8s.io/kube-openapi v0.0.0-20191107075043-30be4d16710a h1:UcxjrRMyNx/i/y8G7kPvLyy7rfbeuf1PYyBf973pgyU=
+k8s.io/kube-openapi v0.0.0-20191107075043-30be4d16710a/go.mod h1:1TqjTSzOxsLGIKfj0lK8EeCP7K1iUG65v09OM0/WG5E=
 k8s.io/utils v0.0.0-20191030222137-2b95a09bc58d h1:1P0iBJsBzxRmR+dIFnM+Iu4aLxnoa7lBqozW/0uHbT8=
 k8s.io/utils v0.0.0-20191030222137-2b95a09bc58d/go.mod h1:sZAwmy6armz5eXlNoLmJcl4F1QuKu7sr+mFQ0byX7Ew=
 sigs.k8s.io/structured-merge-diff v0.0.0-20190525122527-15d366b2352e/go.mod h1:wWxsB5ozmmv/SG7nM11ayaAW51xMvak/t1r0CSlcokI=
diff --git a/util/cert/pem.go b/util/cert/pem.go
index 9185e2e22..c77512315 100644
--- a/util/cert/pem.go
+++ b/util/cert/pem.go
@@ -17,6 +17,7 @@ limitations under the License.
 package cert
 
 import (
+	"bytes"
 	"crypto/x509"
 	"encoding/pem"
 	"errors"
@@ -59,3 +60,14 @@ func ParseCertsPEM(pemCerts []byte) ([]*x509.Certificate, error) {
 	}
 	return certs, nil
 }
+
+// EncodeCertificates returns the PEM-encoded byte array that represents by the specified certs.
+func EncodeCertificates(certs ...*x509.Certificate) ([]byte, error) {
+	b := bytes.Buffer{}
+	for _, cert := range certs {
+		if err := pem.Encode(&b, &pem.Block{Type: CertificateBlockType, Bytes: cert.Raw}); err != nil {
+			return []byte{}, err
+		}
+	}
+	return b.Bytes(), nil
+}