diff --git a/cmd/build-extensions-container.go b/cmd/build-extensions-container.go
index e0e938e3a9..ce60b47420 100644
--- a/cmd/build-extensions-container.go
+++ b/cmd/build-extensions-container.go
@@ -185,8 +185,34 @@ func buildExtensionContainer() error {
 		SizeInBytes:     float64(stat.Size()),
 		SkipCompression: true,
 	}
-	cosaBuild.MetaStamp = float64(time.Now().UnixNano())
+	fmt.Printf("Generating meta.json `extensions` entry for: %s\n", buildID)
+	// The /tmp/extensions.json file is generated as part of the extension container build process.
+	// For more details, refer to:
+	// https://github.com/openshift/os/blob/master/extensions/Dockerfile
+	extensionsFilePath:= "./tmp/extensions.json"
+	fileContent, err := os.ReadFile(extensionsFilePath)
+	if err != nil {
+		fmt.Printf("Error reading JSON file: %v\n", err)
+		return err
+	}
+	// Parse the JSON content into a map
+	packages := make(map[string]string)
+	err = json.Unmarshal(fileContent, &packages)
+	if err != nil {
+		fmt.Printf("Error parsing JSON content: %v\n", err)
+		return err
+	}
+
+	// Convert to extensionsInterfaceMap
+	extensionsInterfaceMap := make(map[string]interface{})
+	for key, value := range packages {
+		extensionsInterfaceMap[key] = value
+	}
 
+	cosaBuild.Extensions = &cosa.Extensions {
+		Manifest:        extensionsInterfaceMap,
+	}
+	cosaBuild.MetaStamp = float64(time.Now().UnixNano())
 	newBytes, err := json.MarshalIndent(cosaBuild, "", "    ")
 	if err != nil {
 		return err
diff --git a/pkg/builds/cosa_v1.go b/pkg/builds/cosa_v1.go
index f439b4020f..e05f9e8ca3 100644
--- a/pkg/builds/cosa_v1.go
+++ b/pkg/builds/cosa_v1.go
@@ -1,7 +1,7 @@
 package builds
 
 // generated by 'make schema'
-// source hash: 4bb2fd8591ae1cc9179181b9efcb550542137a01c9544fd048e66794e0fb176a
+// source hash: d7b6e01415317b89e346747884eb3536cc9e78049a2c71615739afd51fa65569
 
 type AdvisoryDiff []AdvisoryDiffItems
 
@@ -129,9 +129,9 @@ type Cloudartifact struct {
 
 type Extensions struct {
 	Manifest       map[string]interface{} `json:"manifest"`
-	Path           string                 `json:"path"`
-	RpmOstreeState string                 `json:"rpm-ostree-state"`
-	Sha256         string                 `json:"sha256"`
+	Path           string                 `json:"path,omitempty"`
+	RpmOstreeState string                 `json:"rpm-ostree-state,omitempty"`
+	Sha256         string                 `json:"sha256,omitempty"`
 }
 
 type Gcp struct {
diff --git a/pkg/builds/schema_doc.go b/pkg/builds/schema_doc.go
index c7833fd763..663f07506e 100644
--- a/pkg/builds/schema_doc.go
+++ b/pkg/builds/schema_doc.go
@@ -1,5 +1,5 @@
 // Generated by ./generate-schema.sh
-// Source hash: 4bb2fd8591ae1cc9179181b9efcb550542137a01c9544fd048e66794e0fb176a
+// Source hash: d7b6e01415317b89e346747884eb3536cc9e78049a2c71615739afd51fa65569
 // DO NOT EDIT
 
 package builds
@@ -707,10 +707,12 @@ var generatedSchemaJSON = `{
       "$id": "#/properties/extensions",
       "type": "object",
       "title": "Extensions",
-      "required": [
+      "optional": [
         "path",
         "sha256",
-        "rpm-ostree-state",
+        "rpm-ostree-state"
+      ],
+      "required": [
         "manifest"
       ],
       "properties": {
diff --git a/schema/generate-schema.sh b/schema/generate-schema.sh
index 73b50c7f86..99fcfce189 100755
--- a/schema/generate-schema.sh
+++ b/schema/generate-schema.sh
@@ -20,8 +20,13 @@ else
     schematyper=$(which schematyper 2>/dev/null || true)
 fi
 if test -z "${schematyper}"; then
-    env GOBIN=${topdir}/bin go install github.com/idubinskiy/schematyper@latest
-    schematyper=${topdir}/bin/schematyper
+    if [ ! -d "${topdir}/schematyper" ]; then
+        git clone https://github.com/idubinskiy/schematyper.git ${topdir}/schematyper
+        go -C ${topdir}/schematyper mod edit -replace gopkg.in/alecthomas/kingpin.v2=github.com/alecthomas/kingpin/v2@v2.4.0
+        go -C ${topdir}/schematyper mod tidy && go -C ${topdir}/schematyper mod vendor
+        go -C ${topdir}/schematyper build
+    fi
+    schematyper=${topdir}/schematyper/schematyper
 fi
 
 ${schematyper} \
diff --git a/src/build-extensions-container.sh b/src/build-extensions-container.sh
index 621600c54e..1ef9893e08 100755
--- a/src/build-extensions-container.sh
+++ b/src/build-extensions-container.sh
@@ -24,6 +24,7 @@ if [[ -f "${workdir}/src/config.json" ]]; then
 fi
 
 mkdir "${ctx_dir}/hotfixes"
+touch "${workdir}/tmp/extensions.json"
 tar -xC "${ctx_dir}/hotfixes" -f /dev/disk/by-id/virtio-hotfixes
 
 # Build the image, replacing the FROM directive with the local image we have.
@@ -33,6 +34,7 @@ img=localhost/extensions-container
 (set -x; podman build --from oci-archive:"$ostree_ociarchive" --network=host \
     --build-arg COSA=true --build-arg VARIANT="${variant}" --label version="$buildid" \
     --volume /etc/pki/ca-trust:/etc/pki/ca-trust:ro \
+    --volume "${workdir}"/tmp/extensions.json:/tmp/extensions.json \
     -t "${img}" -f extensions/Dockerfile "${ctx_dir}")
 
 # Call skopeo to export it from the container storage to an oci-archive.
diff --git a/src/cmd-coreos-prune b/src/cmd-coreos-prune
index c85f0ad7d9..e843fc9008 100755
--- a/src/cmd-coreos-prune
+++ b/src/cmd-coreos-prune
@@ -56,7 +56,7 @@ Build = collections.namedtuple("Build", ["id", "images", "arch", "meta_json"])
 # set metadata caching to 5m
 CACHE_MAX_AGE_METADATA = 60 * 5
 # These lists are up to date as of schema hash
-# 4bb2fd8591ae1cc9179181b9efcb550542137a01c9544fd048e66794e0fb176a. If changing
+# d7b6e01415317b89e346747884eb3536cc9e78049a2c71615739afd51fa65569. If changing
 # this hash, ensure that the list of SUPPORTED and UNSUPPORTED artifacts below
 # is up to date.
 SUPPORTED = ["amis", "gcp"]
diff --git a/src/v1.json b/src/v1.json
index df27d327a2..ebc80bf080 100644
--- a/src/v1.json
+++ b/src/v1.json
@@ -701,10 +701,12 @@
       "$id": "#/properties/extensions",
       "type": "object",
       "title": "Extensions",
-      "required": [
+      "optional": [
         "path",
         "sha256",
-        "rpm-ostree-state",
+        "rpm-ostree-state"
+      ],
+      "required": [
         "manifest"
       ],
       "properties": {