diff --git a/lock.sbt b/lock.sbt
index a25d26456..cd010caad 100644
--- a/lock.sbt
+++ b/lock.sbt
@@ -146,7 +146,7 @@ Compile / dependencyOverrides ++= {
       "org.apache.tuweni" % "tuweni-io" % "0.10.0",
       "org.apache.tuweni" % "tuweni-units" % "0.10.0",
       "org.checkerframework" % "checker-qual" % "3.49.3",
-      "org.elasticsearch" % "elasticsearch" % "6.8.23",
+      "org.elasticsearch" % "elasticsearch" % "9.3.1",
       "org.elasticsearch" % "elasticsearch-cli" % "6.8.23",
       "org.elasticsearch" % "elasticsearch-core" % "6.8.23",
       "org.elasticsearch" % "elasticsearch-secure-sm" % "6.8.23",
diff --git a/project/Dependencies.scala b/project/Dependencies.scala
index b4ab693b9..0bb0bc8eb 100644
--- a/project/Dependencies.scala
+++ b/project/Dependencies.scala
@@ -72,7 +72,7 @@ object Dependencies {
     // ElasticSearch client, in https://mvnrepository.com.
     // When upgrading to next major version, consider improving the mappings at the same
     // time? Change id fields from type integer to type keyword.  [es_kwd] [ty_v1]
-    val elasticsearchClient = "org.elasticsearch" % "elasticsearch" % "6.8.23"
+    val elasticsearchClient = "org.elasticsearch" % "elasticsearch" % "9.3.1"
     val elasticsearchClientTransport = "org.elasticsearch.client" % "transport" % "6.8.23"
 
     val guava = "com.google.guava" % "guava" % "33.5.0-jre"