diff --git a/lib/Serializer.js b/lib/Serializer.js
index 4fb5123c4..a4befaed6 100644
--- a/lib/Serializer.js
+++ b/lib/Serializer.js
@@ -34,6 +34,7 @@ const debug = require('debug')('opensearch');
 const sjson = require('secure-json-parse');
 const { SerializationError, DeserializationError } = require('./errors');
 const kJsonOptions = Symbol('secure json parse options');
+const JSON11 = require('json11');
 
 /* In JavaScript, a `Number` is a 64-bit floating-point value which can store 16 digits. However, the
  * serializer and deserializer will need to cater to numeric values generated by other languages which
@@ -265,7 +266,12 @@ class Serializer {
       json = JSON.stringify(object, shouldHandleLongNumerals ? checkForBigInts : null);
 
       if (shouldHandleLongNumerals && !numeralsAreNumbers) {
-        const temp = this._stringifyWithBigInt(object, json);
+        // With `withBigInt: false`, valid JSON is produced while maintaining accuracy
+        const temp = JSON11.stringify(object, {
+          withBigInt: false,
+          quote: '"',
+          quoteNames: true,
+        });
         if (temp) json = temp;
       }
     } catch (err) {
@@ -299,7 +305,7 @@ class Serializer {
       );
 
       if (shouldHandleLongNumerals && !numeralsAreNumbers) {
-        const temp = this._parseWithBigInt(json);
+        const temp = JSON11.parse(json, null, { withLongNumerals: true });
         if (temp) {
           object = temp;
         }
diff --git a/package.json b/package.json
index 2f769ae0b..a0cb2bf97 100644
--- a/package.json
+++ b/package.json
@@ -98,6 +98,7 @@
     "xmlbuilder2": "^3.0.2"
   },
   "dependencies": {
+    "json11": "^1.0.2",
     "aws4": "^1.11.0",
     "debug": "^4.3.1",
     "hpagent": "^1.2.0",
diff --git a/yarn.lock b/yarn.lock
index eb92932d7..2d995ca0c 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -2224,6 +2224,11 @@ json-stable-stringify-without-jsonify@^1.0.1:
   resolved "https://registry.yarnpkg.com/json-stable-stringify-without-jsonify/-/json-stable-stringify-without-jsonify-1.0.1.tgz#9db7b59496ad3f3cfef30a75142d2d930ad72651"
   integrity sha1-nbe1lJatPzz+8wp1FC0tkwrXJlE=
 
+json11@^1.0.2:
+  version "1.0.2"
+  resolved "https://registry.yarnpkg.com/json11/-/json11-1.0.2.tgz#98e6a3a01d3ed03d40c3ecc7e945767d23287b6f"
+  integrity sha512-XnGnLo/fE2gsyK+VSPZCOB0IQlJfQaDVIPd4A+KvK+1inMQbm1eEimu/1JzTZgZ0YO/n2WJcdJGDgPHtiQynjw==
+
 json5@^2.1.2:
   version "2.2.3"
   resolved "https://registry.yarnpkg.com/json5/-/json5-2.2.3.tgz#78cd6f1a19bdc12b73db5ad0c61efd66c1e29283"