diff --git a/package.json b/package.json
index ceb3ac4cca937..2f3f95854df04 100644
--- a/package.json
+++ b/package.json
@@ -125,7 +125,7 @@
     "@elastic/apm-rum": "^5.2.0",
     "@elastic/charts": "19.8.1",
     "@elastic/datemath": "5.0.3",
-    "@elastic/elasticsearch": "7.9.0-rc.1",
+    "@elastic/elasticsearch": "7.9.0-rc.2",
     "@elastic/ems-client": "7.9.3",
     "@elastic/eui": "26.3.1",
     "@elastic/filesaver": "1.1.2",
diff --git a/x-pack/plugins/security_solution/common/endpoint/index_data.ts b/x-pack/plugins/security_solution/common/endpoint/index_data.ts
index 00b8f0b057afd..9a61738cd84b4 100644
--- a/x-pack/plugins/security_solution/common/endpoint/index_data.ts
+++ b/x-pack/plugins/security_solution/common/endpoint/index_data.ts
@@ -94,6 +94,6 @@ async function indexAlerts(
       },
       []
     );
-    await client.bulk({ body, refresh: 'true' });
+    await client.bulk({ body, refresh: true });
   }
 }
diff --git a/x-pack/test/api_integration/apis/fleet/agents/acks.ts b/x-pack/test/api_integration/apis/fleet/agents/acks.ts
index e8381aa9d59ea..a040ef20081a8 100644
--- a/x-pack/test/api_integration/apis/fleet/agents/acks.ts
+++ b/x-pack/test/api_integration/apis/fleet/agents/acks.ts
@@ -38,7 +38,7 @@ export default function (providerContext: FtrProviderContext) {
       await esClient.update({
         index: '.kibana',
         id: 'fleet-agents:agent1',
-        refresh: 'true',
+        refresh: true,
         body: {
           doc: agentDoc,
         },
diff --git a/x-pack/test/api_integration/apis/fleet/agents/checkin.ts b/x-pack/test/api_integration/apis/fleet/agents/checkin.ts
index 8942deafdd83c..70147f602e9c7 100644
--- a/x-pack/test/api_integration/apis/fleet/agents/checkin.ts
+++ b/x-pack/test/api_integration/apis/fleet/agents/checkin.ts
@@ -38,7 +38,7 @@ export default function (providerContext: FtrProviderContext) {
       await esClient.update({
         index: '.kibana',
         id: 'fleet-agents:agent1',
-        refresh: 'true',
+        refresh: true,
         body: {
           doc: agentDoc,
         },
diff --git a/x-pack/test/api_integration/apis/fleet/agents/enroll.ts b/x-pack/test/api_integration/apis/fleet/agents/enroll.ts
index 8a21fbcf24c7d..58440a34457d0 100644
--- a/x-pack/test/api_integration/apis/fleet/agents/enroll.ts
+++ b/x-pack/test/api_integration/apis/fleet/agents/enroll.ts
@@ -43,7 +43,7 @@ export default function (providerContext: FtrProviderContext) {
       await esClient.update({
         index: '.kibana',
         id: 'fleet-enrollment-api-keys:ed22ca17-e178-4cfe-8b02-54ea29fbd6d0',
-        refresh: 'true',
+        refresh: true,
         body: {
           doc: enrollmentApiKeyDoc,
         },
diff --git a/x-pack/test/api_integration/apis/fleet/unenroll_agent.ts b/x-pack/test/api_integration/apis/fleet/unenroll_agent.ts
index bc6c44e590cc4..bbbce3314e4cc 100644
--- a/x-pack/test/api_integration/apis/fleet/unenroll_agent.ts
+++ b/x-pack/test/api_integration/apis/fleet/unenroll_agent.ts
@@ -52,7 +52,7 @@ export default function (providerContext: FtrProviderContext) {
       await esClient.update({
         index: '.kibana',
         id: 'fleet-agents:agent1',
-        refresh: 'true',
+        refresh: true,
         body: {
           doc: agentDoc,
         },
diff --git a/x-pack/test/api_integration/services/resolver.ts b/x-pack/test/api_integration/services/resolver.ts
index 750d2f702fb84..7f568a2b00314 100644
--- a/x-pack/test/api_integration/services/resolver.ts
+++ b/x-pack/test/api_integration/services/resolver.ts
@@ -57,7 +57,7 @@ export function ResolverGeneratorProvider({ getService }: FtrProviderContext) {
           return array;
         }, []);
         // force a refresh here otherwise the documents might not be available when the tests search for them
-        await client.bulk({ body, refresh: 'true' });
+        await client.bulk({ body, refresh: true });
         allTrees.push(tree);
       }
       return { trees: allTrees, eventsIndex, alertsIndex };
diff --git a/yarn.lock b/yarn.lock
index 3924655b5e43e..4cc802e328ab8 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -2183,6 +2183,17 @@
     pump "^3.0.0"
     secure-json-parse "^2.1.0"
 
+"@elastic/elasticsearch@7.9.0-rc.2":
+  version "7.9.0-rc.2"
+  resolved "https://registry.yarnpkg.com/@elastic/elasticsearch/-/elasticsearch-7.9.0-rc.2.tgz#cbc935f30940a15484b5ec3758c9b1ef119a5e5c"
+  integrity sha512-1FKCQJVr7s/LasKq6VbrmbWCI0LjoPcnjgmh2vKPzC+yyEEHVoYlmEfR5wBRchK1meATTXZtDhCVF95+Q9kVbA==
+  dependencies:
+    debug "^4.1.1"
+    decompress-response "^4.2.0"
+    ms "^2.1.1"
+    pump "^3.0.0"
+    secure-json-parse "^2.1.0"
+
 "@elastic/ems-client@7.9.3":
   version "7.9.3"
   resolved "https://registry.yarnpkg.com/@elastic/ems-client/-/ems-client-7.9.3.tgz#71b79914f76e347f050ead8474ad65d761e94a8a"