diff --git a/chai.js b/chai.js
index 129bac19a..5bde9bf66 100644
--- a/chai.js
+++ b/chai.js
@@ -14,7 +14,7 @@ var used = [];
  * Chai version
  */
 
-exports.version = '4.2.0';
+exports.version = '4.3.0';
 
 /*!
  * Assertion Error
@@ -1315,7 +1315,7 @@ module.exports = function (chai, _) {
    *
    * Add `.not` earlier in the chain to negate `.arguments`. However, it's often
    * best to assert which type the target is expected to be, rather than
-   * asserting that its not an `arguments` object.
+   * asserting that it’s not an `arguments` object.
    *
    *     expect('foo').to.be.a('string'); // Recommended
    *     expect('foo').to.not.be.arguments; // Not recommended
@@ -2297,7 +2297,7 @@ module.exports = function (chai, _) {
    * a `descriptor`. The problem is that it creates uncertain expectations by
    * asserting that the target either doesn't have a property descriptor with
    * the given key `name`, or that it does have a property descriptor with the
-   * given key `name` but its not deeply equal to the given `descriptor`. It's
+   * given key `name` but it’s not deeply equal to the given `descriptor`. It's
    * often best to identify the exact output that's expected, and then write an
    * assertion that only accepts that exact output.
    *
@@ -6028,7 +6028,7 @@ module.exports = function (chai, util) {
    *     assert.hasAnyDeepKeys(new Set([{one: 'one'}, {two: 'two'}]), [{one: 'one'}, {three: 'three'}]);
    *     assert.hasAnyDeepKeys(new Set([{one: 'one'}, {two: 'two'}]), [{one: 'one'}, {two: 'two'}]);
    *
-   * @name doesNotHaveAllKeys
+   * @name hasAnyDeepKeys
    * @param {Mixed} object
    * @param {Array|Object} keys
    * @param {String} message
@@ -7379,7 +7379,8 @@ module.exports = function (chai, util) {
       if (this instanceof String
           || this instanceof Number
           || this instanceof Boolean
-          || typeof Symbol === 'function' && this instanceof Symbol) {
+          || typeof Symbol === 'function' && this instanceof Symbol
+          || typeof BigInt === 'function' && this instanceof BigInt) {
         return new Assertion(this.valueOf(), null, shouldGetter);
       }
       return new Assertion(this, null, shouldGetter);
diff --git a/lib/chai.js b/lib/chai.js
index efda439e8..688c8c974 100644
--- a/lib/chai.js
+++ b/lib/chai.js
@@ -10,7 +10,7 @@ var used = [];
  * Chai version
  */
 
-exports.version = '4.2.0';
+exports.version = '4.3.0';
 
 /*!
  * Assertion Error
diff --git a/package-lock.json b/package-lock.json
index 31ef6d827..089a510b5 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,6 +1,6 @@
 {
   "name": "chai",
-  "version": "4.2.0",
+  "version": "4.3.0",
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
@@ -601,6 +601,47 @@
         "buffer-more-ints": "0.0.2"
       }
     },
+    "bl": {
+      "version": "1.1.2",
+      "resolved": "https://registry.npmjs.org/bl/-/bl-1.1.2.tgz",
+      "integrity": "sha1-/cqHGplxOqANGeO7ukHER4emU5g=",
+      "dev": true,
+      "optional": true,
+      "requires": {
+        "readable-stream": "~2.0.5"
+      },
+      "dependencies": {
+        "process-nextick-args": {
+          "version": "1.0.7",
+          "resolved": "https://registry.npmjs.org/process-nextick-args/-/process-nextick-args-1.0.7.tgz",
+          "integrity": "sha1-FQ4gt1ZZCtP5EJPyWk8q2L/zC6M=",
+          "dev": true,
+          "optional": true
+        },
+        "readable-stream": {
+          "version": "2.0.6",
+          "resolved": "https://registry.npmjs.org/readable-stream/-/readable-stream-2.0.6.tgz",
+          "integrity": "sha1-j5A0HmilPMySh4jaz80Rs265t44=",
+          "dev": true,
+          "optional": true,
+          "requires": {
+            "core-util-is": "~1.0.0",
+            "inherits": "~2.0.1",
+            "isarray": "~1.0.0",
+            "process-nextick-args": "~1.0.6",
+            "string_decoder": "~0.10.x",
+            "util-deprecate": "~1.0.1"
+          }
+        },
+        "string_decoder": {
+          "version": "0.10.31",
+          "resolved": "https://registry.npmjs.org/string_decoder/-/string_decoder-0.10.31.tgz",
+          "integrity": "sha1-YuIDvEF2bGwoyfyEMB2rHFMQ+pQ=",
+          "dev": true,
+          "optional": true
+        }
+      }
+    },
     "blob": {
       "version": "0.0.4",
       "resolved": "https://registry.npmjs.org/blob/-/blob-0.0.4.tgz",
@@ -4189,6 +4230,7 @@
           "requires": {
             "aws-sign2": "~0.6.0",
             "aws4": "^1.2.1",
+            "bl": "~1.1.2",
             "caseless": "~0.11.0",
             "combined-stream": "~1.0.5",
             "extend": "~3.0.0",
diff --git a/package.json b/package.json
index fc11ec0db..a54989340 100644
--- a/package.json
+++ b/package.json
@@ -17,7 +17,7 @@
     "Veselin Todorov <hi@vesln.com>",
     "John Firebaugh <john.firebaugh@gmail.com>"
   ],
-  "version": "4.2.0",
+  "version": "4.3.0",
   "repository": {
     "type": "git",
     "url": "https://github.com/chaijs/chai"