diff --git a/jib-core/src/main/java/com/google/cloud/tools/jib/image/json/OciIndexTemplate.java b/jib-core/src/main/java/com/google/cloud/tools/jib/image/json/OciIndexTemplate.java
index 6eeffaf4da..1ca6529143 100644
--- a/jib-core/src/main/java/com/google/cloud/tools/jib/image/json/OciIndexTemplate.java
+++ b/jib-core/src/main/java/com/google/cloud/tools/jib/image/json/OciIndexTemplate.java
@@ -125,6 +125,7 @@ public List<String> getDigestsForPlatform(String architecture, String os) {
    * href="https://github.com/opencontainers/image-spec/blob/main/image-index.md">OCI Image Index
    * Specification</a>
    */
+  @JsonIgnoreProperties(ignoreUnknown = true)
   public static class ManifestDescriptorTemplate
       extends BuildableManifestTemplate.ContentDescriptorTemplate {
 
diff --git a/jib-core/src/main/java/com/google/cloud/tools/jib/image/json/V22ManifestListTemplate.java b/jib-core/src/main/java/com/google/cloud/tools/jib/image/json/V22ManifestListTemplate.java
index 3293587f91..e8e08def02 100644
--- a/jib-core/src/main/java/com/google/cloud/tools/jib/image/json/V22ManifestListTemplate.java
+++ b/jib-core/src/main/java/com/google/cloud/tools/jib/image/json/V22ManifestListTemplate.java
@@ -114,6 +114,7 @@ public List<String> getDigestsForPlatform(String architecture, String os) {
   }
 
   /** Template for inner JSON object representing a single platform specific manifest. */
+  @JsonIgnoreProperties(ignoreUnknown = true)
   public static class ManifestDescriptorTemplate implements JsonTemplate {
 
     @JsonIgnoreProperties(ignoreUnknown = true)
diff --git a/jib-core/src/test/java/com/google/cloud/tools/jib/image/json/OciIndexTemplateTest.java b/jib-core/src/test/java/com/google/cloud/tools/jib/image/json/OciIndexTemplateTest.java
index f95a064306..0bfacce149 100644
--- a/jib-core/src/test/java/com/google/cloud/tools/jib/image/json/OciIndexTemplateTest.java
+++ b/jib-core/src/test/java/com/google/cloud/tools/jib/image/json/OciIndexTemplateTest.java
@@ -75,6 +75,27 @@ public void testFromJson() throws IOException, URISyntaxException, DigestExcepti
     Assert.assertEquals(1000, manifest.getSize());
   }
 
+  @Test
+  public void testFromJsonWithUnknownProperties()
+      throws IOException, URISyntaxException, DigestException {
+    // Loads a JSON index whose manifest descriptors carry an OCI 1.1 "artifactType" field, which
+    // Jib does not model. Unknown descriptor properties must be ignored rather than fail parsing.
+    // https://github.com/GoogleContainerTools/jib/issues/4506
+    Path jsonFile =
+        Paths.get(Resources.getResource("core/json/ociindex_artifacttype.json").toURI());
+
+    OciIndexTemplate ociIndexJson =
+        JsonTemplateMapper.readJsonFromFile(jsonFile, OciIndexTemplate.class);
+
+    Assert.assertEquals(2, ociIndexJson.getManifests().size());
+    Assert.assertEquals(
+        "sha256:e692418e4cbaf90ca69d05a66403747baa33ee08806650b51fab815ad7fc331f",
+        ociIndexJson.getDigestsForPlatform("amd64", "linux").get(0));
+    Assert.assertEquals(
+        "sha256:5b0bcabd1ed22e9fb1310cf6c2dec7cdef19f0ad69efa1f392e94a4333501270",
+        ociIndexJson.getDigestsForPlatform("arm64", "linux").get(0));
+  }
+
   @Test
   public void testToJsonWithPlatform() throws DigestException, IOException, URISyntaxException {
     // Loads the expected JSON string.
diff --git a/jib-core/src/test/resources/core/json/ociindex_artifacttype.json b/jib-core/src/test/resources/core/json/ociindex_artifacttype.json
new file mode 100644
index 0000000000..0895ce4deb
--- /dev/null
+++ b/jib-core/src/test/resources/core/json/ociindex_artifacttype.json
@@ -0,0 +1,26 @@
+{
+  "schemaVersion": 2,
+  "mediaType": "application/vnd.oci.image.index.v1+json",
+  "manifests": [
+    {
+      "mediaType": "application/vnd.docker.distribution.manifest.v2+json",
+      "size": 1395,
+      "digest": "sha256:e692418e4cbaf90ca69d05a66403747baa33ee08806650b51fab815ad7fc331f",
+      "platform": {
+        "architecture": "amd64",
+        "os": "linux"
+      },
+      "artifactType": "application/vnd.docker.container.image.v1+json"
+    },
+    {
+      "mediaType": "application/vnd.docker.distribution.manifest.v2+json",
+      "size": 1395,
+      "digest": "sha256:5b0bcabd1ed22e9fb1310cf6c2dec7cdef19f0ad69efa1f392e94a4333501270",
+      "platform": {
+        "architecture": "arm64",
+        "os": "linux"
+      },
+      "artifactType": "application/vnd.docker.container.image.v1+json"
+    }
+  ]
+}
diff --git a/jib-core/src/test/resources/core/json/v22manifest_list.json b/jib-core/src/test/resources/core/json/v22manifest_list.json
index a9df3947b0..cc6b82ff3b 100644
--- a/jib-core/src/test/resources/core/json/v22manifest_list.json
+++ b/jib-core/src/test/resources/core/json/v22manifest_list.json
@@ -9,7 +9,8 @@
       "platform": {
         "architecture": "ppc64le",
         "os": "linux"
-      }
+      },
+      "artifactType": "application/vnd.docker.container.image.v1+json"
     },
     {
       "mediaType": "application/vnd.docker.image.manifest.v2+json",