diff --git a/package.json b/package.json
index 8ebd1a3ec9890..408d97c7908ec 100644
--- a/package.json
+++ b/package.json
@@ -92,7 +92,7 @@
   },
   "dependencies": {
     "@elastic/datemath": "link:packages/elastic-datemath",
-    "@elastic/elasticsearch": "npm:@elastic/elasticsearch-canary@^7.12.0-canary.6",
+    "@elastic/elasticsearch": "npm:@elastic/elasticsearch-canary@^7.12.0-canary.7",
     "@elastic/ems-client": "7.12.0",
     "@elastic/eui": "31.7.0",
     "@elastic/filesaver": "1.1.2",
diff --git a/x-pack/plugins/security_solution/server/lib/detection_engine/signals/build_bulk_body.ts b/x-pack/plugins/security_solution/server/lib/detection_engine/signals/build_bulk_body.ts
index fb72bf9c59b4e..f191d4b5b6843 100644
--- a/x-pack/plugins/security_solution/server/lib/detection_engine/signals/build_bulk_body.ts
+++ b/x-pack/plugins/security_solution/server/lib/detection_engine/signals/build_bulk_body.ts
@@ -73,10 +73,12 @@ export const buildBulkBody = ({
     ...buildSignal([doc], rule),
     ...additionalSignalFields(doc),
   };
-  delete doc._source.threshold_result;
   const event = buildEventTypeSignal(doc);
+  const { threshold_result: thresholdResult, ...filteredSource } = doc._source || {
+    threshold_result: null,
+  };
   const signalHit: SignalHit = {
-    ...doc._source,
+    ...filteredSource,
     '@timestamp': new Date().toISOString(),
     event,
     signal,
diff --git a/yarn.lock b/yarn.lock
index 034cb2c424321..ee3656eaea2c6 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -2167,10 +2167,10 @@
   version "0.0.0"
   uid ""
 
-"@elastic/elasticsearch@npm:@elastic/elasticsearch-canary@^7.12.0-canary.6":
-  version "7.12.0-canary.6"
-  resolved "https://registry.yarnpkg.com/@elastic/elasticsearch-canary/-/elasticsearch-canary-7.12.0-canary.6.tgz#65a9ad7dbc372e39a2925ee2eaea98fb9996fa0c"
-  integrity sha512-2mEU66wG07iRg8ONMFKYvliaepZSReHT2x2Pd541TEtFoKXw+2m6Btdu6em+wEgxRlWSGdVh4ZFk5f2TR8AhbQ==
+"@elastic/elasticsearch@npm:@elastic/elasticsearch-canary@^7.12.0-canary.7":
+  version "7.12.0-canary.7"
+  resolved "https://registry.yarnpkg.com/@elastic/elasticsearch-canary/-/elasticsearch-canary-7.12.0-canary.7.tgz#4ee0c2c1be6e842357a3e68566cff543f58b0d38"
+  integrity sha512-ZS27nBGr9RlGGPp7lIG4cwMu/eaEqwucrWX1+EqvO0eAYocxdzkgkExabW81u7Zc7DK9n3nIuAGdV9WowvzZdQ==
   dependencies:
     debug "^4.3.1"
     hpagent "^0.1.1"