diff --git a/docs/guide/installation-guide.txt b/docs/guide/installation-guide.txt
index 4f2ce77df1..2629ae5963 100644
--- a/docs/guide/installation-guide.txt
+++ b/docs/guide/installation-guide.txt
@@ -21,7 +21,6 @@ Troubleshooting
 The MongoDB driver depends on several other packages, including:
 
 * `bson <https://www.npmjs.com/package/bson>`_
-* `require_optional <https://www.npmjs.com/package/require_optional>`_
 * `safe-buffer <https://www.npmjs.com/package/safe-buffer>`_
 * `saslprep <https://www.npmjs.com/package/saslprep>`_
 
diff --git a/lib/core/connection/utils.js b/lib/core/connection/utils.js
index 2f3d889f43..d6e2d9da2a 100644
--- a/lib/core/connection/utils.js
+++ b/lib/core/connection/utils.js
@@ -1,7 +1,5 @@
 'use strict';
 
-const require_optional = require('require_optional');
-
 function debugOptions(debugFields, options) {
   var finaloptions = {};
   debugFields.forEach(function(n) {
@@ -16,7 +14,7 @@ function retrieveBSON() {
   BSON.native = false;
 
   try {
-    var optionalBSON = require_optional('bson-ext');
+    var optionalBSON = require('bson-ext');
     if (optionalBSON) {
       optionalBSON.native = true;
       return optionalBSON;
@@ -37,7 +35,7 @@ function noSnappyWarning() {
 function retrieveSnappy() {
   var snappy = null;
   try {
-    snappy = require_optional('snappy');
+    snappy = require('snappy');
   } catch (error) {} // eslint-disable-line
   if (!snappy) {
     snappy = {
diff --git a/lib/core/index.js b/lib/core/index.js
index 28aca32e9c..a462b3d202 100644
--- a/lib/core/index.js
+++ b/lib/core/index.js
@@ -1,12 +1,11 @@
 'use strict';
 
 let BSON = require('bson');
-const require_optional = require('require_optional');
 const EJSON = require('./utils').retrieveEJSON();
 
 try {
   // Attempt to grab the native BSON parser
-  const BSONNative = require_optional('bson-ext');
+  const BSONNative = require('bson-ext');
   // If we got the native parser, use it instead of the
   // Javascript one
   if (BSONNative) {
diff --git a/lib/core/utils.js b/lib/core/utils.js
index 6043a51297..bbf04dbd30 100644
--- a/lib/core/utils.js
+++ b/lib/core/utils.js
@@ -1,7 +1,6 @@
 'use strict';
 const os = require('os');
 const crypto = require('crypto');
-const requireOptional = require('require_optional');
 
 /**
  * Generate a UUIDv4
@@ -27,7 +26,7 @@ function retrieveKerberos() {
   let kerberos;
 
   try {
-    kerberos = requireOptional('kerberos');
+    kerberos = require('kerberos');
   } catch (err) {
     if (err.code === 'MODULE_NOT_FOUND') {
       throw new Error('The `kerberos` module was not found. Please install it and try again.');
@@ -48,7 +47,7 @@ const noEJSONError = function() {
 function retrieveEJSON() {
   let EJSON = null;
   try {
-    EJSON = requireOptional('mongodb-extjson');
+    EJSON = require('mongodb-extjson');
   } catch (error) {} // eslint-disable-line
   if (!EJSON) {
     EJSON = {
diff --git a/package-lock.json b/package-lock.json
index 716cf883e3..b4ac3d4899 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -3062,27 +3062,6 @@
       "integrity": "sha512-s7PoyDv/II1ObgQunCbB9PdLmUcBZcnWOcxDh7O0N/UwDEsHyqkW+Qh28jW+mVuCdx7gLB0BotYI1Y6uI9iyew==",
       "dev": true
     },
-    "require_optional": {
-      "version": "1.0.1",
-      "resolved": "https://registry.npmjs.org/require_optional/-/require_optional-1.0.1.tgz",
-      "integrity": "sha512-qhM/y57enGWHAe3v/NcwML6a3/vfESLe/sGM2dII+gEO0BpKRUkWZow/tyloNqJyN6kXSl3RyyM8Ll5D/sJP8g==",
-      "requires": {
-        "resolve-from": "^2.0.0",
-        "semver": "^5.1.0"
-      },
-      "dependencies": {
-        "resolve-from": {
-          "version": "2.0.0",
-          "resolved": "https://registry.npmjs.org/resolve-from/-/resolve-from-2.0.0.tgz",
-          "integrity": "sha1-lICrIOlP+h2egKgEx+oUdhGWa1c="
-        },
-        "semver": {
-          "version": "5.7.1",
-          "resolved": "https://registry.npmjs.org/semver/-/semver-5.7.1.tgz",
-          "integrity": "sha512-sauaDf/PZdVgrLTNYHRtpXa1iRiKcaebiKQ1BJdpQlWH2lCvexQdX55snPFyK7QzpudqbCI0qXFfOasHdyNDGQ=="
-        }
-      }
-    },
     "safe-buffer": {
       "version": "5.2.1",
       "resolved": "https://registry.npmjs.org/safe-buffer/-/safe-buffer-5.2.1.tgz",
diff --git a/package.json b/package.json
index 52dde7b5a1..ee0236e406 100644
--- a/package.json
+++ b/package.json
@@ -16,18 +16,38 @@
     "driver",
     "official"
   ],
-  "peerOptionalDependencies": {
+  "peerDependencies": {
     "kerberos": "^1.1.0",
     "mongodb-client-encryption": "^1.0.0",
     "mongodb-extjson": "^2.1.2",
     "snappy": "^6.3.4",
-    "bson-ext": "^2.0.0"
+    "bson-ext": "^2.0.0",
+    "aws4": "^1.10.1"
+  },
+  "peerDependenciesMeta": {
+    "kerberos": {
+      "optional": true
+    },
+    "mongodb-client-encryption": {
+      "optional": true
+    },
+    "mongodb-extjson": {
+      "optional": true
+    },
+    "snappy": {
+      "optional": true
+    },
+    "bson-ext": {
+      "optional": true
+    },
+    "aws4": {
+      "optional": true
+    }
   },
   "dependencies": {
     "bl": "^2.2.1",
     "bson": "^1.1.4",
     "denque": "^1.4.1",
-    "require_optional": "^1.0.1",
     "safe-buffer": "^5.1.2"
   },
   "devDependencies": {