diff --git a/modules/ingest-common/src/main/java/org/opensearch/ingest/common/FingerprintProcessor.java b/modules/ingest-common/src/main/java/org/opensearch/ingest/common/FingerprintProcessor.java
index 8899cada9e8b3..c4f8209c4d07a 100644
--- a/modules/ingest-common/src/main/java/org/opensearch/ingest/common/FingerprintProcessor.java
+++ b/modules/ingest-common/src/main/java/org/opensearch/ingest/common/FingerprintProcessor.java
@@ -32,7 +32,7 @@
 /**
  * Processor that generating hash value for the specified fields or fields not in the specified excluded list
  */
-public class FingerprintProcessor extends AbstractProcessor {
+public final class FingerprintProcessor extends AbstractProcessor {
     public static final String TYPE = "fingerprint";
     private static final Set<String> HASH_METHODS = Set.of("MD5", "SHA-1", "SHA-256", "SHA3-256");