diff --git a/gradle.properties b/gradle.properties
index b523e913..0ea5b81c 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -1,5 +1,5 @@
 ltrVersion = 1.5.9
-elasticsearchVersion = 8.14.3
-luceneVersion = 9.10.0
+elasticsearchVersion = 8.15.2
+luceneVersion = 9.11.1
 ow2Version = 8.0.1
 antlrVersion = 4.5.1-1
diff --git a/src/main/java/com/o19s/es/ltr/action/CachesStatsAction.java b/src/main/java/com/o19s/es/ltr/action/CachesStatsAction.java
index 30594d17..0fe1565d 100644
--- a/src/main/java/com/o19s/es/ltr/action/CachesStatsAction.java
+++ b/src/main/java/com/o19s/es/ltr/action/CachesStatsAction.java
@@ -47,10 +47,6 @@ protected CachesStatsAction() {
     }
 
     public static class CachesStatsNodesRequest extends BaseNodesRequest<CachesStatsNodesRequest> {
-        public CachesStatsNodesRequest(StreamInput in) throws IOException {
-            super(in);
-        }
-
         public CachesStatsNodesRequest() {
             super((String[]) null);
         }
diff --git a/src/main/java/com/o19s/es/ltr/action/ClearCachesAction.java b/src/main/java/com/o19s/es/ltr/action/ClearCachesAction.java
index c9b38b06..347950cc 100644
--- a/src/main/java/com/o19s/es/ltr/action/ClearCachesAction.java
+++ b/src/main/java/com/o19s/es/ltr/action/ClearCachesAction.java
@@ -57,7 +57,6 @@ public static class ClearCachesNodesRequest extends BaseNodesRequest<ClearCaches
 
 
         public ClearCachesNodesRequest(StreamInput in) throws IOException {
-            super(in);
             store = in.readString();
             operation = Operation.values()[in.readVInt()];
             name = in.readOptionalString();
@@ -107,9 +106,7 @@ private void clearElement(String storeName, String name, ClearCachesNodesRequest
             this.name = Objects.requireNonNull(name);
         }
 
-        @Override
-        public void writeTo(StreamOutput out) throws IOException {
-            super.writeTo(out);
+        public void writeToStream(StreamOutput out) throws IOException {
             out.writeString(store);
             out.writeVInt(operation.ordinal());
             out.writeOptionalString(name);
diff --git a/src/main/java/com/o19s/es/ltr/action/LTRStatsAction.java b/src/main/java/com/o19s/es/ltr/action/LTRStatsAction.java
index 97c7cab3..d41a0d95 100644
--- a/src/main/java/com/o19s/es/ltr/action/LTRStatsAction.java
+++ b/src/main/java/com/o19s/es/ltr/action/LTRStatsAction.java
@@ -42,13 +42,13 @@ public LTRStatsRequestBuilder(ElasticsearchClient client) {
     public static class LTRStatsNodeRequest extends TransportRequest {
         private final LTRStatsNodesRequest nodesRequest;
 
-        public LTRStatsNodeRequest(LTRStatsNodesRequest nodesRequest) {
-            this.nodesRequest = nodesRequest;
-        }
-
         public LTRStatsNodeRequest(StreamInput in) throws IOException {
             super(in);
-            nodesRequest = new LTRStatsNodesRequest(in);
+            this.nodesRequest = new LTRStatsNodesRequest(in);
+        }
+
+        public LTRStatsNodeRequest(LTRStatsNodesRequest nodesRequest) {
+            this.nodesRequest = nodesRequest;
         }
 
         public LTRStatsNodesRequest getLTRStatsNodesRequest() {
@@ -58,7 +58,7 @@ public LTRStatsNodesRequest getLTRStatsNodesRequest() {
         @Override
         public void writeTo(StreamOutput out) throws IOException {
             super.writeTo(out);
-            nodesRequest.writeTo(out);
+            nodesRequest.writeToStream(out);
         }
     }
 
@@ -102,7 +102,7 @@ public static class LTRStatsNodesRequest extends BaseNodesRequest<LTRStatsNodesR
         private Set<String> statsToBeRetrieved;
 
         public LTRStatsNodesRequest(StreamInput in) throws IOException {
-            super(in);
+            super((String[])null);
             statsToBeRetrieved = in.readCollectionAsSet(StreamInput::readString);
         }
 
@@ -119,9 +119,7 @@ public Set<String> getStatsToBeRetrieved() {
             return statsToBeRetrieved;
         }
 
-        @Override
-        public void writeTo(StreamOutput out) throws IOException {
-            super.writeTo(out);
+        public void writeToStream(StreamOutput out) throws IOException {
             out.writeStringCollection(statsToBeRetrieved);
         }
     }
diff --git a/src/main/java/com/o19s/es/ltr/action/ListStoresAction.java b/src/main/java/com/o19s/es/ltr/action/ListStoresAction.java
index afa61f7d..3b2822a3 100644
--- a/src/main/java/com/o19s/es/ltr/action/ListStoresAction.java
+++ b/src/main/java/com/o19s/es/ltr/action/ListStoresAction.java
@@ -27,6 +27,7 @@
 import org.elasticsearch.common.io.stream.StreamInput;
 import org.elasticsearch.common.io.stream.StreamOutput;
 import org.elasticsearch.common.io.stream.Writeable;
+import org.elasticsearch.core.TimeValue;
 import org.elasticsearch.xcontent.ToXContent;
 import org.elasticsearch.xcontent.ToXContentObject;
 import org.elasticsearch.xcontent.XContentBuilder;
@@ -51,7 +52,9 @@ public ActionRequestValidationException validate() {
             return null;
         }
 
-        public ListStoresActionRequest() {}
+        public ListStoresActionRequest() {
+            super(TimeValue.MAX_VALUE);
+        }
 
         public ListStoresActionRequest(StreamInput in) throws IOException {
             super(in);
diff --git a/src/main/java/com/o19s/es/ltr/action/TransportClearCachesAction.java b/src/main/java/com/o19s/es/ltr/action/TransportClearCachesAction.java
index e8044671..7f3a94ee 100644
--- a/src/main/java/com/o19s/es/ltr/action/TransportClearCachesAction.java
+++ b/src/main/java/com/o19s/es/ltr/action/TransportClearCachesAction.java
@@ -108,7 +108,7 @@ public ClearCachesNodeRequest(ClearCachesNodesRequest req) {
         @Override
         public void writeTo(StreamOutput out) throws IOException {
             super.writeTo(out);
-            request.writeTo(out);
+            request.writeToStream(out);
         }
     }
 }
diff --git a/src/main/java/com/o19s/es/ltr/rest/RestLTRStats.java b/src/main/java/com/o19s/es/ltr/rest/RestLTRStats.java
index 63f59301..90aad495 100644
--- a/src/main/java/com/o19s/es/ltr/rest/RestLTRStats.java
+++ b/src/main/java/com/o19s/es/ltr/rest/RestLTRStats.java
@@ -4,6 +4,7 @@
 import com.o19s.es.ltr.action.LTRStatsAction.LTRStatsNodesRequest;
 import com.o19s.es.ltr.stats.StatName;
 import org.elasticsearch.client.internal.node.NodeClient;
+import org.elasticsearch.core.TimeValue;
 import org.elasticsearch.rest.BaseRestHandler;
 import org.elasticsearch.rest.RestRequest;
 import org.elasticsearch.rest.action.RestActions;
@@ -55,7 +56,12 @@ protected RestChannelConsumer prepareRequest(RestRequest request, NodeClient cli
     private LTRStatsNodesRequest getRequest(RestRequest request) {
         LTRStatsNodesRequest ltrStatsRequest = new LTRStatsNodesRequest(
                 splitCommaSeparatedParam(request, "nodeId").orElse(null));
-        ltrStatsRequest.timeout(request.param("timeout"));
+
+        ltrStatsRequest.timeout(
+            Optional.ofNullable(request.param("timeout"))
+                .map(timeout -> TimeValue.parseTimeValue(timeout, "timeout"))
+                .orElse(TimeValue.MAX_VALUE)
+        );
 
         List<String> requestedStats =
                 splitCommaSeparatedParam(request, "stat")
diff --git a/src/test/java/com/o19s/es/ltr/logging/LoggingFetchSubPhaseTests.java b/src/test/java/com/o19s/es/ltr/logging/LoggingFetchSubPhaseTests.java
index ea1d9a40..539c2629 100644
--- a/src/test/java/com/o19s/es/ltr/logging/LoggingFetchSubPhaseTests.java
+++ b/src/test/java/com/o19s/es/ltr/logging/LoggingFetchSubPhaseTests.java
@@ -53,7 +53,6 @@
 import org.elasticsearch.search.SearchHit;
 import org.elasticsearch.search.fetch.FetchSubPhase;
 import org.elasticsearch.search.fetch.FetchSubPhaseProcessor;
-import org.elasticsearch.search.lookup.Source;
 import org.junit.AfterClass;
 import org.junit.BeforeClass;
 
@@ -185,8 +184,7 @@ public void collect(int doc) throws IOException {
                         doc,
                         id
                     );
-                    Source source = null;
-                    processor.process(new FetchSubPhase.HitContext(hit, context, doc, Map.of(), source));
+                    processor.process(new FetchSubPhase.HitContext(hit, context, doc, Map.of(), null, null));
                     hits.add(hit);
                 }
             }