diff --git a/go.mod b/go.mod
index 3e2d6f0e..8f98074a 100644
--- a/go.mod
+++ b/go.mod
@@ -9,7 +9,7 @@ require (
 	github.com/PuerkitoBio/purell v1.1.1 // indirect
 	github.com/blang/semver v3.5.1+incompatible // indirect
 	github.com/coreos/go-semver v0.3.0 // indirect
-	github.com/docker/distribution v2.7.1+incompatible // indirect
+	github.com/docker/distribution v2.8.0+incompatible // indirect
 	github.com/docker/docker v1.4.2-0.20190109173153-a79fabbfe841 // indirect
 	github.com/docker/go-connections v0.4.0 // indirect
 	github.com/docker/go-units v0.4.0 // indirect
diff --git a/go.sum b/go.sum
index c13c5292..75df228c 100644
--- a/go.sum
+++ b/go.sum
@@ -198,8 +198,8 @@ github.com/dnaeon/go-vcr v1.0.1/go.mod h1:aBB1+wY4s93YsC3HHjMBMrwTj2R9FHDzUr9KyG
 github.com/dnaeon/go-vcr v1.1.0/go.mod h1:M7tiix8f0r6mKKJ3Yq/kqU1OYf3MnfmBWVbPx/yU9ko=
 github.com/dnstap/golang-dnstap v0.0.0-20170829151710-2cf77a2b5e11/go.mod h1:s1PfVYYVmTMgCSPtho4LKBDecEHJWtiVDPNv78Z985U=
 github.com/docker/distribution v0.0.0-20170726174610-edc3ab29cdff/go.mod h1:J2gT2udsDAN96Uj4KfcMRqY0/ypR+oyYUYmja8H+y+w=
-github.com/docker/distribution v2.7.1+incompatible h1:a5mlkVzth6W5A4fOsS3D2EO5BUmsJpcB+cRlLU7cSug=
-github.com/docker/distribution v2.7.1+incompatible/go.mod h1:J2gT2udsDAN96Uj4KfcMRqY0/ypR+oyYUYmja8H+y+w=
+github.com/docker/distribution v2.8.0+incompatible h1:l9EaZDICImO1ngI+uTifW+ZYvvz7fKISBAKpg+MbWbY=
+github.com/docker/distribution v2.8.0+incompatible/go.mod h1:J2gT2udsDAN96Uj4KfcMRqY0/ypR+oyYUYmja8H+y+w=
 github.com/docker/docker v0.7.3-0.20190327010347-be7ac8be2ae0/go.mod h1:eEKB0N0r5NX/I1kEveEz05bcu8tLC/8azJZsviup8Sk=
 github.com/docker/docker v1.4.2-0.20190109173153-a79fabbfe841 h1:v+18GsqK0gpLOMKuhPWrNKuHBWaL2008UsZyqXyVCks=
 github.com/docker/docker v1.4.2-0.20190109173153-a79fabbfe841/go.mod h1:eEKB0N0r5NX/I1kEveEz05bcu8tLC/8azJZsviup8Sk=
@@ -584,7 +584,6 @@ github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd h1:TRLaZ9cD/w
 github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd/go.mod h1:6dJC0mAP4ikYIbvyc7fijjWJddQyLn8Ig3JB5CqoB9Q=
 github.com/modern-go/reflect2 v0.0.0-20180320133207-05fbef0ca5da/go.mod h1:bx2lNnkwVCuqBIxFjflWJWanXIb3RllmbCylyMrvgv0=
 github.com/modern-go/reflect2 v0.0.0-20180701023420-4b7aa43c6742/go.mod h1:bx2lNnkwVCuqBIxFjflWJWanXIb3RllmbCylyMrvgv0=
-github.com/modern-go/reflect2 v1.0.1 h1:9f412s+6RmYXLWZSEzVVgPGK7C2PphHj5RJrvfx9AWI=
 github.com/modern-go/reflect2 v1.0.1/go.mod h1:bx2lNnkwVCuqBIxFjflWJWanXIb3RllmbCylyMrvgv0=
 github.com/modern-go/reflect2 v1.0.2 h1:xBagoLtFs94CBntxluKeaWgTMpvLxC4ur3nMaC9Gz0M=
 github.com/modern-go/reflect2 v1.0.2/go.mod h1:yWuevngMOJpCy52FWWMvUC8ws7m/LJsjYzDa0/r8luk=
diff --git a/vendor/github.com/docker/distribution/reference/normalize.go b/vendor/github.com/docker/distribution/reference/normalize.go
index 2d71fc5e..b3dfb7a6 100644
--- a/vendor/github.com/docker/distribution/reference/normalize.go
+++ b/vendor/github.com/docker/distribution/reference/normalize.go
@@ -56,6 +56,35 @@ func ParseNormalizedNamed(s string) (Named, error) {
 	return named, nil
 }
 
+// ParseDockerRef normalizes the image reference following the docker convention. This is added
+// mainly for backward compatibility.
+// The reference returned can only be either tagged or digested. For reference contains both tag
+// and digest, the function returns digested reference, e.g. docker.io/library/busybox:latest@
+// sha256:7cc4b5aefd1d0cadf8d97d4350462ba51c694ebca145b08d7d41b41acc8db5aa will be returned as
+// docker.io/library/busybox@sha256:7cc4b5aefd1d0cadf8d97d4350462ba51c694ebca145b08d7d41b41acc8db5aa.
+func ParseDockerRef(ref string) (Named, error) {
+	named, err := ParseNormalizedNamed(ref)
+	if err != nil {
+		return nil, err
+	}
+	if _, ok := named.(NamedTagged); ok {
+		if canonical, ok := named.(Canonical); ok {
+			// The reference is both tagged and digested, only
+			// return digested.
+			newNamed, err := WithName(canonical.Name())
+			if err != nil {
+				return nil, err
+			}
+			newCanonical, err := WithDigest(newNamed, canonical.Digest())
+			if err != nil {
+				return nil, err
+			}
+			return newCanonical, nil
+		}
+	}
+	return TagNameOnly(named), nil
+}
+
 // splitDockerDomain splits a repository name to domain and remotename string.
 // If no valid domain is found, the default domain is used. Repository name
 // needs to be already validated before.
diff --git a/vendor/github.com/docker/distribution/reference/reference.go b/vendor/github.com/docker/distribution/reference/reference.go
index 2f66cca8..8c0c23b2 100644
--- a/vendor/github.com/docker/distribution/reference/reference.go
+++ b/vendor/github.com/docker/distribution/reference/reference.go
@@ -205,7 +205,7 @@ func Parse(s string) (Reference, error) {
 	var repo repository
 
 	nameMatch := anchoredNameRegexp.FindStringSubmatch(matches[1])
-	if nameMatch != nil && len(nameMatch) == 3 {
+	if len(nameMatch) == 3 {
 		repo.domain = nameMatch[1]
 		repo.path = nameMatch[2]
 	} else {
diff --git a/vendor/modules.txt b/vendor/modules.txt
index e7c7e492..9384f6ea 100644
--- a/vendor/modules.txt
+++ b/vendor/modules.txt
@@ -27,7 +27,7 @@ github.com/coreos/go-systemd/journal
 github.com/coreos/pkg/capnslog
 # github.com/davecgh/go-spew v1.1.1
 github.com/davecgh/go-spew/spew
-# github.com/docker/distribution v2.7.1+incompatible
+# github.com/docker/distribution v2.8.0+incompatible
 github.com/docker/distribution/digestset
 github.com/docker/distribution/reference
 # github.com/docker/docker v1.4.2-0.20190109173153-a79fabbfe841