diff --git a/release-notes/opensearch-performance-analyzer.release-notes-1.3.20.0.md b/release-notes/opensearch-performance-analyzer.release-notes-1.3.20.0.md
new file mode 100644
index 00000000..54257818
--- /dev/null
+++ b/release-notes/opensearch-performance-analyzer.release-notes-1.3.20.0.md
@@ -0,0 +1,3 @@
+## Version 1.3.20 Release Notes
+
+Compatible with OpenSearch 1.3.20
diff --git a/src/main/java/org/opensearch/performanceanalyzer/collectors/NodeStatsAllShardsMetricsCollector.java b/src/main/java/org/opensearch/performanceanalyzer/collectors/NodeStatsAllShardsMetricsCollector.java
index 2de63690..e6a3b0ed 100644
--- a/src/main/java/org/opensearch/performanceanalyzer/collectors/NodeStatsAllShardsMetricsCollector.java
+++ b/src/main/java/org/opensearch/performanceanalyzer/collectors/NodeStatsAllShardsMetricsCollector.java
@@ -27,6 +27,7 @@
 package org.opensearch.performanceanalyzer.collectors;
 
 
+import com.fasterxml.jackson.annotation.JsonCreator;
 import com.fasterxml.jackson.annotation.JsonIgnore;
 import com.fasterxml.jackson.annotation.JsonProperty;
 import com.google.common.collect.ImmutableMap;
@@ -303,6 +304,7 @@ public NodeStatsMetricsAllShardsPerCollectionStatus(ShardStats shardStats) {
         }
 
         @SuppressWarnings("checkstyle:parameternumber")
+        @JsonCreator
         public NodeStatsMetricsAllShardsPerCollectionStatus(
                 long queryCacheHitCount,
                 long queryCacheMissCount,