diff --git a/go.mod b/go.mod
index 6473ca9a7b9..982c1b3464d 100644
--- a/go.mod
+++ b/go.mod
@@ -21,7 +21,7 @@ require (
 	github.com/onsi/ginkgo v1.16.5
 	github.com/onsi/gomega v1.27.10
 	github.com/opencontainers/go-digest v1.0.0
-	github.com/opencontainers/image-spec v1.1.0-rc4
+	github.com/opencontainers/image-spec v1.1.0-rc5
 	github.com/opencontainers/runc v1.1.9
 	github.com/opencontainers/runtime-spec v1.1.0
 	github.com/opencontainers/runtime-tools v0.9.1-0.20230317050512-e931285f4b69
diff --git a/go.sum b/go.sum
index a5e521525b8..1abeca07e87 100644
--- a/go.sum
+++ b/go.sum
@@ -315,8 +315,8 @@ github.com/onsi/gomega v1.27.10 h1:naR28SdDFlqrG6kScpT8VWpu1xWY5nJRCF3XaYyBjhI=
 github.com/onsi/gomega v1.27.10/go.mod h1:RsS8tutOdbdgzbPtzzATp12yT7kM5I5aElG3evPbQ0M=
 github.com/opencontainers/go-digest v1.0.0 h1:apOUWs51W5PlhuyGyz9FCeeBIOUDA/6nW8Oi/yOhh5U=
 github.com/opencontainers/go-digest v1.0.0/go.mod h1:0JzlMkj0TRzQZfJkVvzbP0HBR3IKzErnv2BNG4W4MAM=
-github.com/opencontainers/image-spec v1.1.0-rc4 h1:oOxKUJWnFC4YGHCCMNql1x4YaDfYBTS5Y4x/Cgeo1E0=
-github.com/opencontainers/image-spec v1.1.0-rc4/go.mod h1:X4pATf0uXsnn3g5aiGIsVnJBR4mxhKzfwmvK/B2NTm8=
+github.com/opencontainers/image-spec v1.1.0-rc5 h1:Ygwkfw9bpDvs+c9E34SdgGOj41dX/cbdlwvlWt0pnFI=
+github.com/opencontainers/image-spec v1.1.0-rc5/go.mod h1:X4pATf0uXsnn3g5aiGIsVnJBR4mxhKzfwmvK/B2NTm8=
 github.com/opencontainers/runc v1.1.9 h1:XR0VIHTGce5eWPkaPesqTBrhW2yAcaraWfsEalNwQLM=
 github.com/opencontainers/runc v1.1.9/go.mod h1:CbUumNnWCuTGFukNXahoo/RFBZvDAgRh/smNYNOhA50=
 github.com/opencontainers/runtime-spec v1.1.0 h1:HHUyrt9mwHUjtasSbXSMvs4cyFxh+Bll4AjJ9odEGpg=
diff --git a/vendor/github.com/opencontainers/image-spec/specs-go/v1/descriptor.go b/vendor/github.com/opencontainers/image-spec/specs-go/v1/descriptor.go
index 3004e9a40dc..1881b11814b 100644
--- a/vendor/github.com/opencontainers/image-spec/specs-go/v1/descriptor.go
+++ b/vendor/github.com/opencontainers/image-spec/specs-go/v1/descriptor.go
@@ -21,7 +21,7 @@ import digest "github.com/opencontainers/go-digest"
 // when marshalled to JSON.
 type Descriptor struct {
 	// MediaType is the media type of the object this schema refers to.
-	MediaType string `json:"mediaType,omitempty"`
+	MediaType string `json:"mediaType"`
 
 	// Digest is the digest of the targeted content.
 	Digest digest.Digest `json:"digest"`
diff --git a/vendor/github.com/opencontainers/image-spec/specs-go/v1/layout.go b/vendor/github.com/opencontainers/image-spec/specs-go/v1/layout.go
index fc79e9e0d14..c5503cb3053 100644
--- a/vendor/github.com/opencontainers/image-spec/specs-go/v1/layout.go
+++ b/vendor/github.com/opencontainers/image-spec/specs-go/v1/layout.go
@@ -15,10 +15,14 @@
 package v1
 
 const (
-	// ImageLayoutFile is the file name of oci image layout file
+	// ImageLayoutFile is the file name containing ImageLayout in an OCI Image Layout
 	ImageLayoutFile = "oci-layout"
 	// ImageLayoutVersion is the version of ImageLayout
 	ImageLayoutVersion = "1.0.0"
+	// ImageIndexFile is the file name of the entry point for references and descriptors in an OCI Image Layout
+	ImageIndexFile = "index.json"
+	// ImageBlobsDir is the directory name containing content addressable blobs in an OCI Image Layout
+	ImageBlobsDir = "blobs"
 )
 
 // ImageLayout is the structure in the "oci-layout" file, found in the root
diff --git a/vendor/github.com/opencontainers/image-spec/specs-go/version.go b/vendor/github.com/opencontainers/image-spec/specs-go/version.go
index e3b7ac03a93..11e09b58467 100644
--- a/vendor/github.com/opencontainers/image-spec/specs-go/version.go
+++ b/vendor/github.com/opencontainers/image-spec/specs-go/version.go
@@ -25,7 +25,7 @@ const (
 	VersionPatch = 0
 
 	// VersionDev indicates development branch. Releases will be empty string.
-	VersionDev = "-rc.4"
+	VersionDev = "-rc.5"
 )
 
 // Version is the specification version that the package types support.
diff --git a/vendor/modules.txt b/vendor/modules.txt
index 23ffb3e2a85..1b39e6f466a 100644
--- a/vendor/modules.txt
+++ b/vendor/modules.txt
@@ -557,7 +557,7 @@ github.com/onsi/gomega/types
 # github.com/opencontainers/go-digest v1.0.0
 ## explicit; go 1.13
 github.com/opencontainers/go-digest
-# github.com/opencontainers/image-spec v1.1.0-rc4
+# github.com/opencontainers/image-spec v1.1.0-rc5
 ## explicit; go 1.18
 github.com/opencontainers/image-spec/specs-go
 github.com/opencontainers/image-spec/specs-go/v1