diff --git a/client/rest-high-level/src/main/java/org/elasticsearch/client/indexlifecycle/AllocateAction.java b/client/rest-high-level/src/main/java/org/elasticsearch/client/indexlifecycle/AllocateAction.java
index 702db15b965c7..a297e9b550e4e 100644
--- a/client/rest-high-level/src/main/java/org/elasticsearch/client/indexlifecycle/AllocateAction.java
+++ b/client/rest-high-level/src/main/java/org/elasticsearch/client/indexlifecycle/AllocateAction.java
@@ -40,7 +40,7 @@ public class AllocateAction implements LifecycleAction, ToXContentObject {
     static final ParseField REQUIRE_FIELD = new ParseField("require");
 
     @SuppressWarnings("unchecked")
-    private static final ConstructingObjectParser<AllocateAction, Void> PARSER = new ConstructingObjectParser<>(NAME,
+    private static final ConstructingObjectParser<AllocateAction, Void> PARSER = new ConstructingObjectParser<>(NAME, true,
             a -> new AllocateAction((Integer) a[0], (Map<String, String>) a[1], (Map<String, String>) a[2], (Map<String, String>) a[3]));
 
     static {
diff --git a/client/rest-high-level/src/main/java/org/elasticsearch/client/indexlifecycle/DeleteAction.java b/client/rest-high-level/src/main/java/org/elasticsearch/client/indexlifecycle/DeleteAction.java
index 299b0ac582771..9592b2edda0e4 100644
--- a/client/rest-high-level/src/main/java/org/elasticsearch/client/indexlifecycle/DeleteAction.java
+++ b/client/rest-high-level/src/main/java/org/elasticsearch/client/indexlifecycle/DeleteAction.java
@@ -30,7 +30,7 @@
 public class DeleteAction implements LifecycleAction, ToXContentObject {
     public static final String NAME = "delete";
 
-    private static final ObjectParser<DeleteAction, Void> PARSER = new ObjectParser<>(NAME, DeleteAction::new);
+    private static final ObjectParser<DeleteAction, Void> PARSER = new ObjectParser<>(NAME, true, DeleteAction::new);
 
     public static DeleteAction parse(XContentParser parser) {
         return PARSER.apply(parser, null);
diff --git a/client/rest-high-level/src/main/java/org/elasticsearch/client/indexlifecycle/ForceMergeAction.java b/client/rest-high-level/src/main/java/org/elasticsearch/client/indexlifecycle/ForceMergeAction.java
index eb564b7cd27b6..8b05b16eebafe 100644
--- a/client/rest-high-level/src/main/java/org/elasticsearch/client/indexlifecycle/ForceMergeAction.java
+++ b/client/rest-high-level/src/main/java/org/elasticsearch/client/indexlifecycle/ForceMergeAction.java
@@ -33,7 +33,7 @@ public class ForceMergeAction implements LifecycleAction, ToXContentObject {
     private static final ParseField MAX_NUM_SEGMENTS_FIELD = new ParseField("max_num_segments");
 
     private static final ConstructingObjectParser<ForceMergeAction, Void> PARSER = new ConstructingObjectParser<>(NAME,
-        false, a -> {
+        true, a -> {
         int maxNumSegments = (int) a[0];
         return new ForceMergeAction(maxNumSegments);
     });
diff --git a/client/rest-high-level/src/main/java/org/elasticsearch/client/indexlifecycle/FreezeAction.java b/client/rest-high-level/src/main/java/org/elasticsearch/client/indexlifecycle/FreezeAction.java
index ecc054c132d67..3e5952539bb89 100644
--- a/client/rest-high-level/src/main/java/org/elasticsearch/client/indexlifecycle/FreezeAction.java
+++ b/client/rest-high-level/src/main/java/org/elasticsearch/client/indexlifecycle/FreezeAction.java
@@ -29,7 +29,7 @@
 public class FreezeAction implements LifecycleAction, ToXContentObject {
     public static final String NAME = "freeze";
 
-    private static final ObjectParser<FreezeAction, Void> PARSER = new ObjectParser<>(NAME, FreezeAction::new);
+    private static final ObjectParser<FreezeAction, Void> PARSER = new ObjectParser<>(NAME, true, FreezeAction::new);
 
     public static FreezeAction parse(XContentParser parser) {
         return PARSER.apply(parser, null);
diff --git a/client/rest-high-level/src/main/java/org/elasticsearch/client/indexlifecycle/LifecyclePolicy.java b/client/rest-high-level/src/main/java/org/elasticsearch/client/indexlifecycle/LifecyclePolicy.java
index 5e4ae1f36bcbc..9032afd7ba417 100644
--- a/client/rest-high-level/src/main/java/org/elasticsearch/client/indexlifecycle/LifecyclePolicy.java
+++ b/client/rest-high-level/src/main/java/org/elasticsearch/client/indexlifecycle/LifecyclePolicy.java
@@ -44,7 +44,7 @@ public class LifecyclePolicy implements ToXContentObject {
     static final ParseField PHASES_FIELD = new ParseField("phases");
 
     @SuppressWarnings("unchecked")
-    public static ConstructingObjectParser<LifecyclePolicy, String> PARSER = new ConstructingObjectParser<>("lifecycle_policy", false,
+    public static ConstructingObjectParser<LifecyclePolicy, String> PARSER = new ConstructingObjectParser<>("lifecycle_policy", true,
         (a, name) -> {
             List<Phase> phases = (List<Phase>) a[0];
             Map<String, Phase> phaseMap = phases.stream().collect(Collectors.toMap(Phase::getName, Function.identity()));
diff --git a/client/rest-high-level/src/main/java/org/elasticsearch/client/indexlifecycle/LifecyclePolicyMetadata.java b/client/rest-high-level/src/main/java/org/elasticsearch/client/indexlifecycle/LifecyclePolicyMetadata.java
index 84de81437065d..b58594e5756c9 100644
--- a/client/rest-high-level/src/main/java/org/elasticsearch/client/indexlifecycle/LifecyclePolicyMetadata.java
+++ b/client/rest-high-level/src/main/java/org/elasticsearch/client/indexlifecycle/LifecyclePolicyMetadata.java
@@ -38,7 +38,8 @@ public class LifecyclePolicyMetadata implements ToXContentObject {
     static final ParseField MODIFIED_DATE = new ParseField("modified_date");
 
     @SuppressWarnings("unchecked")
-    public static final ConstructingObjectParser<LifecyclePolicyMetadata, String> PARSER = new ConstructingObjectParser<>("policy_metadata",
+    public static final ConstructingObjectParser<LifecyclePolicyMetadata, String> PARSER = new ConstructingObjectParser<>(
+            "policy_metadata", true,
             a -> {
                 LifecyclePolicy policy = (LifecyclePolicy) a[0];
                 return new LifecyclePolicyMetadata(policy, (long) a[1], ZonedDateTime.parse((String) a[2]).toInstant().toEpochMilli());
diff --git a/client/rest-high-level/src/main/java/org/elasticsearch/client/indexlifecycle/Phase.java b/client/rest-high-level/src/main/java/org/elasticsearch/client/indexlifecycle/Phase.java
index 0c19d39c85964..f6d3e80644764 100644
--- a/client/rest-high-level/src/main/java/org/elasticsearch/client/indexlifecycle/Phase.java
+++ b/client/rest-high-level/src/main/java/org/elasticsearch/client/indexlifecycle/Phase.java
@@ -44,7 +44,7 @@ public class Phase implements ToXContentObject {
     static final ParseField ACTIONS_FIELD = new ParseField("actions");
 
     @SuppressWarnings("unchecked")
-    private static final ConstructingObjectParser<Phase, String> PARSER = new ConstructingObjectParser<>("phase", false,
+    private static final ConstructingObjectParser<Phase, String> PARSER = new ConstructingObjectParser<>("phase", true,
         (a, name) -> new Phase(name, (TimeValue) a[0], ((List<LifecycleAction>) a[1]).stream()
             .collect(Collectors.toMap(LifecycleAction::getName, Function.identity()))));
     static {
diff --git a/client/rest-high-level/src/main/java/org/elasticsearch/client/indexlifecycle/PhaseExecutionInfo.java b/client/rest-high-level/src/main/java/org/elasticsearch/client/indexlifecycle/PhaseExecutionInfo.java
index 802ca8834cdd3..681f79c67829c 100644
--- a/client/rest-high-level/src/main/java/org/elasticsearch/client/indexlifecycle/PhaseExecutionInfo.java
+++ b/client/rest-high-level/src/main/java/org/elasticsearch/client/indexlifecycle/PhaseExecutionInfo.java
@@ -40,7 +40,7 @@ public class PhaseExecutionInfo implements ToXContentObject {
     private static final ParseField MODIFIED_DATE_IN_MILLIS_FIELD = new ParseField("modified_date_in_millis");
 
     private static final ConstructingObjectParser<PhaseExecutionInfo, String> PARSER = new ConstructingObjectParser<>(
-        "phase_execution_info", false,
+        "phase_execution_info", true,
         (a, name) -> new PhaseExecutionInfo((String) a[0], (Phase) a[1], (long) a[2], (long) a[3]));
     static {
         PARSER.declareString(ConstructingObjectParser.constructorArg(), POLICY_NAME_FIELD);
diff --git a/client/rest-high-level/src/main/java/org/elasticsearch/client/indexlifecycle/ReadOnlyAction.java b/client/rest-high-level/src/main/java/org/elasticsearch/client/indexlifecycle/ReadOnlyAction.java
index 7734e792bbc5b..cf364af6d9e5b 100644
--- a/client/rest-high-level/src/main/java/org/elasticsearch/client/indexlifecycle/ReadOnlyAction.java
+++ b/client/rest-high-level/src/main/java/org/elasticsearch/client/indexlifecycle/ReadOnlyAction.java
@@ -29,7 +29,7 @@
 public class ReadOnlyAction implements LifecycleAction, ToXContentObject {
     public static final String NAME = "readonly";
 
-    private static final ObjectParser<ReadOnlyAction, Void> PARSER = new ObjectParser<>(NAME, false, ReadOnlyAction::new);
+    private static final ObjectParser<ReadOnlyAction, Void> PARSER = new ObjectParser<>(NAME, true, ReadOnlyAction::new);
 
     public static ReadOnlyAction parse(XContentParser parser) {
         return PARSER.apply(parser, null);
diff --git a/client/rest-high-level/src/main/java/org/elasticsearch/client/indexlifecycle/RolloverAction.java b/client/rest-high-level/src/main/java/org/elasticsearch/client/indexlifecycle/RolloverAction.java
index 0cc9dcf234969..e84cc6921440a 100644
--- a/client/rest-high-level/src/main/java/org/elasticsearch/client/indexlifecycle/RolloverAction.java
+++ b/client/rest-high-level/src/main/java/org/elasticsearch/client/indexlifecycle/RolloverAction.java
@@ -38,7 +38,7 @@ public class RolloverAction implements LifecycleAction, ToXContentObject {
     private static final ParseField MAX_DOCS_FIELD = new ParseField("max_docs");
     private static final ParseField MAX_AGE_FIELD = new ParseField("max_age");
 
-    private static final ConstructingObjectParser<RolloverAction, Void> PARSER = new ConstructingObjectParser<>(NAME,
+    private static final ConstructingObjectParser<RolloverAction, Void> PARSER = new ConstructingObjectParser<>(NAME, true,
         a -> new RolloverAction((ByteSizeValue) a[0], (TimeValue) a[1], (Long) a[2]));
     static {
         PARSER.declareField(ConstructingObjectParser.optionalConstructorArg(),
diff --git a/client/rest-high-level/src/main/java/org/elasticsearch/client/indexlifecycle/ShrinkAction.java b/client/rest-high-level/src/main/java/org/elasticsearch/client/indexlifecycle/ShrinkAction.java
index 345356380145e..920fe4a46257f 100644
--- a/client/rest-high-level/src/main/java/org/elasticsearch/client/indexlifecycle/ShrinkAction.java
+++ b/client/rest-high-level/src/main/java/org/elasticsearch/client/indexlifecycle/ShrinkAction.java
@@ -33,7 +33,7 @@ public class ShrinkAction implements LifecycleAction, ToXContentObject {
     private static final ParseField NUMBER_OF_SHARDS_FIELD = new ParseField("number_of_shards");
 
     private static final ConstructingObjectParser<ShrinkAction, Void> PARSER =
-        new ConstructingObjectParser<>(NAME, a -> new ShrinkAction((Integer) a[0]));
+        new ConstructingObjectParser<>(NAME, true, a -> new ShrinkAction((Integer) a[0]));
 
     static {
         PARSER.declareInt(ConstructingObjectParser.constructorArg(), NUMBER_OF_SHARDS_FIELD);
diff --git a/client/rest-high-level/src/main/java/org/elasticsearch/client/indexlifecycle/UnfollowAction.java b/client/rest-high-level/src/main/java/org/elasticsearch/client/indexlifecycle/UnfollowAction.java
index ba25cf937ec8f..11e9836efc02d 100644
--- a/client/rest-high-level/src/main/java/org/elasticsearch/client/indexlifecycle/UnfollowAction.java
+++ b/client/rest-high-level/src/main/java/org/elasticsearch/client/indexlifecycle/UnfollowAction.java
@@ -31,7 +31,7 @@
 public class UnfollowAction implements LifecycleAction, ToXContentObject {
     public static final String NAME = "unfollow";
 
-    private static final ObjectParser<UnfollowAction, Void> PARSER = new ObjectParser<>(NAME, UnfollowAction::new);
+    private static final ObjectParser<UnfollowAction, Void> PARSER = new ObjectParser<>(NAME, true, UnfollowAction::new);
 
     public UnfollowAction() {}
 
diff --git a/client/rest-high-level/src/test/java/org/elasticsearch/client/indexlifecycle/AllocateActionTests.java b/client/rest-high-level/src/test/java/org/elasticsearch/client/indexlifecycle/AllocateActionTests.java
index e44eb0da0e188..1cbfdf4f369cc 100644
--- a/client/rest-high-level/src/test/java/org/elasticsearch/client/indexlifecycle/AllocateActionTests.java
+++ b/client/rest-high-level/src/test/java/org/elasticsearch/client/indexlifecycle/AllocateActionTests.java
@@ -24,6 +24,7 @@
 import java.util.Collections;
 import java.util.HashMap;
 import java.util.Map;
+import java.util.function.Predicate;
 
 public class AllocateActionTests extends AbstractXContentTestCase<AllocateAction> {
 
@@ -65,7 +66,14 @@ protected AllocateAction doParseInstance(XContentParser parser) {
 
     @Override
     protected boolean supportsUnknownFields() {
-        return false;
+        return true;
+    }
+
+    @Override
+    protected Predicate<String> getRandomFieldsExcludeFilter() {
+        // this whole structure expects to be maps of strings, so more complex objects would just mess that up.
+        // setting it this way allows for new fields at the root
+        return (field) -> field.isEmpty() == false;
     }
 
     public void testAllMapsNullOrEmpty() {
diff --git a/client/rest-high-level/src/test/java/org/elasticsearch/client/indexlifecycle/DeleteActionTests.java b/client/rest-high-level/src/test/java/org/elasticsearch/client/indexlifecycle/DeleteActionTests.java
index fb7deb97a2787..9f4dcf6bc641a 100644
--- a/client/rest-high-level/src/test/java/org/elasticsearch/client/indexlifecycle/DeleteActionTests.java
+++ b/client/rest-high-level/src/test/java/org/elasticsearch/client/indexlifecycle/DeleteActionTests.java
@@ -35,6 +35,6 @@ protected DeleteAction doParseInstance(XContentParser parser) {
 
     @Override
     protected boolean supportsUnknownFields() {
-        return false;
+        return true;
     }
 }
diff --git a/client/rest-high-level/src/test/java/org/elasticsearch/client/indexlifecycle/ForceMergeActionTests.java b/client/rest-high-level/src/test/java/org/elasticsearch/client/indexlifecycle/ForceMergeActionTests.java
index 16fafcfa24015..7c3181a61dfd3 100644
--- a/client/rest-high-level/src/test/java/org/elasticsearch/client/indexlifecycle/ForceMergeActionTests.java
+++ b/client/rest-high-level/src/test/java/org/elasticsearch/client/indexlifecycle/ForceMergeActionTests.java
@@ -39,7 +39,7 @@ protected ForceMergeAction doParseInstance(XContentParser parser) {
 
     @Override
     protected boolean supportsUnknownFields() {
-        return false;
+        return true;
     }
 
     @Override
diff --git a/client/rest-high-level/src/test/java/org/elasticsearch/client/indexlifecycle/FreezeActionTests.java b/client/rest-high-level/src/test/java/org/elasticsearch/client/indexlifecycle/FreezeActionTests.java
index 3fc40ee137b53..1a92db1cdf1f5 100644
--- a/client/rest-high-level/src/test/java/org/elasticsearch/client/indexlifecycle/FreezeActionTests.java
+++ b/client/rest-high-level/src/test/java/org/elasticsearch/client/indexlifecycle/FreezeActionTests.java
@@ -35,6 +35,6 @@ protected FreezeAction doParseInstance(XContentParser parser) {
 
     @Override
     protected boolean supportsUnknownFields() {
-        return false;
+        return true;
     }
 }
diff --git a/client/rest-high-level/src/test/java/org/elasticsearch/client/indexlifecycle/GetLifecyclePolicyResponseTests.java b/client/rest-high-level/src/test/java/org/elasticsearch/client/indexlifecycle/GetLifecyclePolicyResponseTests.java
index c16c270512ca6..ff1733498e37d 100644
--- a/client/rest-high-level/src/test/java/org/elasticsearch/client/indexlifecycle/GetLifecyclePolicyResponseTests.java
+++ b/client/rest-high-level/src/test/java/org/elasticsearch/client/indexlifecycle/GetLifecyclePolicyResponseTests.java
@@ -30,6 +30,7 @@
 import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.List;
+import java.util.function.Predicate;
 
 import static org.elasticsearch.client.indexlifecycle.LifecyclePolicyTests.createRandomPolicy;
 
@@ -54,7 +55,23 @@ protected GetLifecyclePolicyResponse doParseInstance(XContentParser parser) thro
 
     @Override
     protected boolean supportsUnknownFields() {
-        return false;
+        return true;
+    }
+
+    @Override
+    protected Predicate<String> getRandomFieldsExcludeFilter() {
+        return (field) ->
+            // phases is a list of Phase parsable entries only
+            field.endsWith(".phases")
+            // these are all meant to be maps of strings, so complex objects will confuse the parser
+            || field.endsWith(".include")
+            || field.endsWith(".exclude")
+            || field.endsWith(".require")
+            // actions are meant to be a list of LifecycleAction parsable entries only
+            || field.endsWith(".actions")
+            // field.isEmpty() means do not insert an object at the root of the json. This parser expects
+            // every root level named object to be parsable as a specific type
+            || field.isEmpty();
     }
 
     @Override
diff --git a/client/rest-high-level/src/test/java/org/elasticsearch/client/indexlifecycle/LifecyclePolicyMetadataTests.java b/client/rest-high-level/src/test/java/org/elasticsearch/client/indexlifecycle/LifecyclePolicyMetadataTests.java
index 6d8014c432c28..eba3113f1777d 100644
--- a/client/rest-high-level/src/test/java/org/elasticsearch/client/indexlifecycle/LifecyclePolicyMetadataTests.java
+++ b/client/rest-high-level/src/test/java/org/elasticsearch/client/indexlifecycle/LifecyclePolicyMetadataTests.java
@@ -29,6 +29,7 @@
 import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.List;
+import java.util.function.Predicate;
 
 import static org.elasticsearch.client.indexlifecycle.LifecyclePolicyTests.createRandomPolicy;
 
@@ -50,7 +51,21 @@ protected LifecyclePolicyMetadata doParseInstance(XContentParser parser) throws
 
     @Override
     protected boolean supportsUnknownFields() {
-        return false;
+        return true;
+    }
+
+    @Override
+    protected Predicate<String> getRandomFieldsExcludeFilter() {
+        return (field) ->
+            // phases is a list of Phase parsable entries only
+            field.endsWith(".phases")
+            // these are all meant to be maps of strings, so complex objects will confuse the parser
+            || field.endsWith(".include")
+            || field.endsWith(".exclude")
+            || field.endsWith(".require")
+            // actions are meant to be a list of LifecycleAction parsable entries only
+            || field.endsWith(".actions");
+
     }
 
     @Override
diff --git a/client/rest-high-level/src/test/java/org/elasticsearch/client/indexlifecycle/LifecyclePolicyTests.java b/client/rest-high-level/src/test/java/org/elasticsearch/client/indexlifecycle/LifecyclePolicyTests.java
index 1690f66572142..6451b4bbbef59 100644
--- a/client/rest-high-level/src/test/java/org/elasticsearch/client/indexlifecycle/LifecyclePolicyTests.java
+++ b/client/rest-high-level/src/test/java/org/elasticsearch/client/indexlifecycle/LifecyclePolicyTests.java
@@ -34,6 +34,7 @@
 import java.util.Map;
 import java.util.Set;
 import java.util.function.Function;
+import java.util.function.Predicate;
 import java.util.stream.Collectors;
 
 import static org.hamcrest.Matchers.equalTo;
@@ -55,7 +56,13 @@ protected LifecyclePolicy doParseInstance(XContentParser parser) {
 
     @Override
     protected boolean supportsUnknownFields() {
-        return false;
+        return true;
+    }
+
+    @Override
+    protected Predicate<String> getRandomFieldsExcludeFilter() {
+        // these items all have some specific parsing that does not allow them to have additional objects within them.
+        return (field) -> field.contains("allocate.") || field.equals("phases") || field.endsWith("actions");
     }
 
     @Override
diff --git a/client/rest-high-level/src/test/java/org/elasticsearch/client/indexlifecycle/PhaseExecutionInfoTests.java b/client/rest-high-level/src/test/java/org/elasticsearch/client/indexlifecycle/PhaseExecutionInfoTests.java
index 0db9b56aea93c..fea740a442c95 100644
--- a/client/rest-high-level/src/test/java/org/elasticsearch/client/indexlifecycle/PhaseExecutionInfoTests.java
+++ b/client/rest-high-level/src/test/java/org/elasticsearch/client/indexlifecycle/PhaseExecutionInfoTests.java
@@ -28,6 +28,7 @@
 import java.io.IOException;
 import java.util.ArrayList;
 import java.util.List;
+import java.util.function.Predicate;
 
 public class PhaseExecutionInfoTests extends AbstractXContentTestCase<PhaseExecutionInfo> {
 
@@ -53,9 +54,15 @@ protected PhaseExecutionInfo doParseInstance(XContentParser parser) throws IOExc
         return PhaseExecutionInfo.parse(parser, phaseName);
     }
 
+    @Override
+    protected Predicate<String> getRandomFieldsExcludeFilter() {
+        // actions are plucked from the named registry, and it fails if the action is not in the named registry
+        return (field) -> field.equals("phase_definition.actions");
+    }
+
     @Override
     protected boolean supportsUnknownFields() {
-        return false;
+        return true;
     }
 
     @Override
diff --git a/client/rest-high-level/src/test/java/org/elasticsearch/client/indexlifecycle/PhaseTests.java b/client/rest-high-level/src/test/java/org/elasticsearch/client/indexlifecycle/PhaseTests.java
index 3b4fc2fec6059..df4f11d18d028 100644
--- a/client/rest-high-level/src/test/java/org/elasticsearch/client/indexlifecycle/PhaseTests.java
+++ b/client/rest-high-level/src/test/java/org/elasticsearch/client/indexlifecycle/PhaseTests.java
@@ -30,6 +30,7 @@
 import java.util.Collections;
 import java.util.List;
 import java.util.Map;
+import java.util.function.Predicate;
 
 public class PhaseTests extends AbstractXContentTestCase<Phase> {
     private String phaseName;
@@ -61,6 +62,12 @@ protected Phase doParseInstance(XContentParser parser) {
         return Phase.parse(parser, phaseName);
     }
 
+    @Override
+    protected Predicate<String> getRandomFieldsExcludeFilter() {
+        // actions are plucked from the named registry, and it fails if the action is not in the named registry
+        return (field) -> field.equals("actions");
+    }
+
     @Override
     protected NamedXContentRegistry xContentRegistry() {
         List<NamedXContentRegistry.Entry> entries = new ArrayList<>(ClusterModule.getNamedXWriteables());
@@ -70,7 +77,7 @@ protected NamedXContentRegistry xContentRegistry() {
 
     @Override
     protected boolean supportsUnknownFields() {
-        return false;
+        return true;
     }
 
     public void testDefaultAfter() {
diff --git a/client/rest-high-level/src/test/java/org/elasticsearch/client/indexlifecycle/ReadOnlyActionTests.java b/client/rest-high-level/src/test/java/org/elasticsearch/client/indexlifecycle/ReadOnlyActionTests.java
index bf57478425cc9..dd6f62a447b39 100644
--- a/client/rest-high-level/src/test/java/org/elasticsearch/client/indexlifecycle/ReadOnlyActionTests.java
+++ b/client/rest-high-level/src/test/java/org/elasticsearch/client/indexlifecycle/ReadOnlyActionTests.java
@@ -30,7 +30,7 @@ protected ReadOnlyAction doParseInstance(XContentParser parser) {
 
     @Override
     protected boolean supportsUnknownFields() {
-        return false;
+        return true;
     }
 
     @Override
diff --git a/client/rest-high-level/src/test/java/org/elasticsearch/client/indexlifecycle/RolloverActionTests.java b/client/rest-high-level/src/test/java/org/elasticsearch/client/indexlifecycle/RolloverActionTests.java
index bbbdba37e5640..833321d702c63 100644
--- a/client/rest-high-level/src/test/java/org/elasticsearch/client/indexlifecycle/RolloverActionTests.java
+++ b/client/rest-high-level/src/test/java/org/elasticsearch/client/indexlifecycle/RolloverActionTests.java
@@ -33,7 +33,7 @@ protected RolloverAction doParseInstance(XContentParser parser) {
 
     @Override
     protected boolean supportsUnknownFields() {
-        return false;
+        return true;
     }
 
     @Override
diff --git a/client/rest-high-level/src/test/java/org/elasticsearch/client/indexlifecycle/ShrinkActionTests.java b/client/rest-high-level/src/test/java/org/elasticsearch/client/indexlifecycle/ShrinkActionTests.java
index adeec1ff825a9..d796221518fe1 100644
--- a/client/rest-high-level/src/test/java/org/elasticsearch/client/indexlifecycle/ShrinkActionTests.java
+++ b/client/rest-high-level/src/test/java/org/elasticsearch/client/indexlifecycle/ShrinkActionTests.java
@@ -43,7 +43,7 @@ static ShrinkAction randomInstance() {
 
     @Override
     protected boolean supportsUnknownFields() {
-        return false;
+        return true;
     }
 
     public void testNonPositiveShardNumber() {
diff --git a/client/rest-high-level/src/test/java/org/elasticsearch/client/indexlifecycle/UnfollowActionTests.java b/client/rest-high-level/src/test/java/org/elasticsearch/client/indexlifecycle/UnfollowActionTests.java
index 4dd73c5a08ec2..715a692213232 100644
--- a/client/rest-high-level/src/test/java/org/elasticsearch/client/indexlifecycle/UnfollowActionTests.java
+++ b/client/rest-high-level/src/test/java/org/elasticsearch/client/indexlifecycle/UnfollowActionTests.java
@@ -38,6 +38,6 @@ protected UnfollowAction doParseInstance(XContentParser parser) throws IOExcepti
 
     @Override
     protected boolean supportsUnknownFields() {
-        return false;
+        return true;
     }
 }