diff --git a/Documentation/config-gerrit.txt b/Documentation/config-gerrit.txt
index 5052386b19..91d93c3602 100644
--- a/Documentation/config-gerrit.txt
+++ b/Documentation/config-gerrit.txt
@@ -3208,11 +3208,6 @@ Note that the same username and password are used for all servers.
 
 For further information about Elasticsearch security, please refer to the documentation:
 
-* link:https://www.elastic.co/guide/en/x-pack/5.6/security-getting-started.html[Elasticsearch 5.6]
-* link:https://www.elastic.co/guide/en/x-pack/6.2/security-getting-started.html[Elasticsearch 6.2]
-* link:https://www.elastic.co/guide/en/elastic-stack-overview/6.3/security-getting-started.html[Elasticsearch 6.3]
-* link:https://www.elastic.co/guide/en/elastic-stack-overview/6.4/security-getting-started.html[Elasticsearch 6.4]
-* link:https://www.elastic.co/guide/en/elastic-stack-overview/6.5/security-getting-started.html[Elasticsearch 6.5]
 * link:https://www.elastic.co/guide/en/elastic-stack-overview/6.6/security-getting-started.html[Elasticsearch 6.6]
 
 [[elasticsearch.username]]elasticsearch.username::
diff --git a/java/com/google/gerrit/elasticsearch/ElasticVersion.java b/java/com/google/gerrit/elasticsearch/ElasticVersion.java
index 82816fb25f..aef3c84034 100644
--- a/java/com/google/gerrit/elasticsearch/ElasticVersion.java
+++ b/java/com/google/gerrit/elasticsearch/ElasticVersion.java
@@ -18,7 +18,6 @@ import com.google.common.base.Joiner;
 import java.util.regex.Pattern;
 
 public enum ElasticVersion {
-  V6_5("6.5.*"),
   V6_6("6.6.*"),
   V6_7("6.7.*"),
   V6_8("6.8.*"),
diff --git a/javatests/com/google/gerrit/elasticsearch/ElasticContainer.java b/javatests/com/google/gerrit/elasticsearch/ElasticContainer.java
index e4b45edbab..8a36107155 100644
--- a/javatests/com/google/gerrit/elasticsearch/ElasticContainer.java
+++ b/javatests/com/google/gerrit/elasticsearch/ElasticContainer.java
@@ -38,8 +38,6 @@ public class ElasticContainer extends ElasticsearchContainer {
 
   private static String getImageName(ElasticVersion version) {
     switch (version) {
-      case V6_5:
-        return "blacktop/elasticsearch:6.5.4";
       case V6_6:
         return "blacktop/elasticsearch:6.6.2";
       case V6_7:
diff --git a/javatests/com/google/gerrit/elasticsearch/ElasticVersionTest.java b/javatests/com/google/gerrit/elasticsearch/ElasticVersionTest.java
index 5a3d6da2a7..825d221569 100644
--- a/javatests/com/google/gerrit/elasticsearch/ElasticVersionTest.java
+++ b/javatests/com/google/gerrit/elasticsearch/ElasticVersionTest.java
@@ -25,9 +25,6 @@ public class ElasticVersionTest {
 
   @Test
   public void supportedVersion() throws Exception {
-    assertThat(ElasticVersion.forVersion("6.5.0")).isEqualTo(ElasticVersion.V6_5);
-    assertThat(ElasticVersion.forVersion("6.5.1")).isEqualTo(ElasticVersion.V6_5);
-
     assertThat(ElasticVersion.forVersion("6.6.0")).isEqualTo(ElasticVersion.V6_6);
     assertThat(ElasticVersion.forVersion("6.6.1")).isEqualTo(ElasticVersion.V6_6);
 
@@ -69,7 +66,6 @@ public class ElasticVersionTest {
 
   @Test
   public void atLeastMinorVersion() throws Exception {
-    assertThat(ElasticVersion.V6_5.isAtLeastMinorVersion(ElasticVersion.V6_7)).isFalse();
     assertThat(ElasticVersion.V6_6.isAtLeastMinorVersion(ElasticVersion.V6_7)).isFalse();
     assertThat(ElasticVersion.V6_7.isAtLeastMinorVersion(ElasticVersion.V6_7)).isTrue();
     assertThat(ElasticVersion.V6_8.isAtLeastMinorVersion(ElasticVersion.V6_8)).isTrue();
@@ -84,7 +80,6 @@ public class ElasticVersionTest {
 
   @Test
   public void version6OrLater() throws Exception {
-    assertThat(ElasticVersion.V6_5.isV6OrLater()).isTrue();
     assertThat(ElasticVersion.V6_6.isV6OrLater()).isTrue();
     assertThat(ElasticVersion.V6_7.isV6OrLater()).isTrue();
     assertThat(ElasticVersion.V6_8.isV6OrLater()).isTrue();
@@ -99,7 +94,6 @@ public class ElasticVersionTest {
 
   @Test
   public void version7OrLater() throws Exception {
-    assertThat(ElasticVersion.V6_5.isV7OrLater()).isFalse();
     assertThat(ElasticVersion.V6_6.isV7OrLater()).isFalse();
     assertThat(ElasticVersion.V6_7.isV7OrLater()).isFalse();
     assertThat(ElasticVersion.V6_8.isV7OrLater()).isFalse();