diff --git a/libs/telemetry/src/main/java/org/opensearch/telemetry/diagnostics/DiagnosticsEventListener.java b/libs/telemetry/src/main/java/org/opensearch/telemetry/diagnostics/DiagnosticsEventListener.java
index a1e7645693010..8c6b9f388733d 100644
--- a/libs/telemetry/src/main/java/org/opensearch/telemetry/diagnostics/DiagnosticsEventListener.java
+++ b/libs/telemetry/src/main/java/org/opensearch/telemetry/diagnostics/DiagnosticsEventListener.java
@@ -40,12 +40,12 @@ public class DiagnosticsEventListener implements TraceEventListener {
     /**
      * Key used to store the start time of a span in the span attributes (timestamp in milliseconds).
      */
-    protected final static String START_SPAN_TIME = "start_span_time";
+    public final static String START_SPAN_TIME = "start_span_time";
 
     /**
      * Key used to store the elapsed time of a span in the span attributes (duration in milliseconds).
      */
-    protected final static String ELAPSED_TIME = "elapsed_time";
+    public final static String ELAPSED_TIME = "elapsed_time";
 
     /**
      * Constructs a new DiagnosticsTraceEventListener with the specified tracer, thread resource recorder,