diff --git a/CHANGELOG.md b/CHANGELOG.md
index b52984ae..5c3cd07c 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,9 @@
+# 6.4.2
+
+### Bug Fixes
+
+- [#199](https://github.com/okta/okta-react/pull/199) Fixes okta-auth-js peer dependency error
+
 # 6.4.1
 
 ### Bug Fixes
diff --git a/generated/samples/custom-login/package.json b/generated/samples/custom-login/package.json
index 1997782b..fd2d577e 100644
--- a/generated/samples/custom-login/package.json
+++ b/generated/samples/custom-login/package.json
@@ -3,9 +3,9 @@
   "version": "0.3.0",
   "private": true,
   "dependencies": {
-    "@okta/okta-auth-js": "^5.6.0",
+    "@okta/okta-auth-js": "^6.0.0",
     "@okta/okta-react": "*",
-    "@okta/okta-signin-widget": "^5.12.2",
+    "@okta/okta-signin-widget": "^6.0.0",
     "colors": "^1.4.0",
     "semantic-ui-css": "^2.4.1",
     "semantic-ui-react": "^2.0.3",
diff --git a/generated/samples/doc-direct-auth/package.json b/generated/samples/doc-direct-auth/package.json
index 44c1274c..10c186c6 100644
--- a/generated/samples/doc-direct-auth/package.json
+++ b/generated/samples/doc-direct-auth/package.json
@@ -3,7 +3,7 @@
   "version": "0.3.0",
   "private": true,
   "dependencies": {
-    "@okta/okta-auth-js": "^5.6.0",
+    "@okta/okta-auth-js": "^6.0.0",
     "@okta/okta-react": "*",
     "react": "^16.8.0",
     "react-dom": "^16.8.0",
diff --git a/generated/samples/doc-embedded-widget/package.json b/generated/samples/doc-embedded-widget/package.json
index 07d3a0d1..4a787f76 100644
--- a/generated/samples/doc-embedded-widget/package.json
+++ b/generated/samples/doc-embedded-widget/package.json
@@ -3,9 +3,9 @@
   "version": "0.3.0",
   "private": true,
   "dependencies": {
-    "@okta/okta-auth-js": "^5.6.0",
+    "@okta/okta-auth-js": "^6.0.0",
     "@okta/okta-react": "*",
-    "@okta/okta-signin-widget": "^5.12.2",
+    "@okta/okta-signin-widget": "^6.0.0",
     "react": "^16.8.0",
     "react-dom": "^16.8.0",
     "react-router-dom": "^5.2.0",
diff --git a/generated/samples/okta-hosted-login/package.json b/generated/samples/okta-hosted-login/package.json
index 28f93050..7fe2b4ef 100644
--- a/generated/samples/okta-hosted-login/package.json
+++ b/generated/samples/okta-hosted-login/package.json
@@ -3,7 +3,7 @@
   "version": "0.3.0",
   "private": true,
   "dependencies": {
-    "@okta/okta-auth-js": "^5.6.0",
+    "@okta/okta-auth-js": "^6.0.0",
     "@okta/okta-react": "*",
     "colors": "^1.4.0",
     "semantic-ui-css": "^2.4.1",
diff --git a/package.json b/package.json
index a08ac385..e1f8a6b7 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@okta/okta-react",
-  "version": "6.4.1",
+  "version": "6.4.2",
   "description": "React support for Okta",
   "private": true,
   "scripts": {
@@ -45,7 +45,7 @@
     "compare-versions": "^4.1.2"
   },
   "peerDependencies": {
-    "@okta/okta-auth-js": "^5.3.1",
+    "@okta/okta-auth-js": "^5.3.1 || ^6.0.0",
     "@types/react-router-dom": "^5.1.6",
     "react": ">=16.8.0",
     "react-dom": ">=16.8.0",
diff --git a/src/LoginCallback.tsx b/src/LoginCallback.tsx
index 029404ab..cfdce206 100644
--- a/src/LoginCallback.tsx
+++ b/src/LoginCallback.tsx
@@ -26,7 +26,10 @@ const LoginCallback: React.FC<LoginCallbackProps> = ({ errorComponent, loadingEl
 
   const ErrorReporter = errorComponent || OktaError;
   React.useEffect(() => {
-    if (onAuthResume && oktaAuth.isInteractionRequired?.() ) {
+    // eslint-disable-next-line @typescript-eslint/ban-ts-comment
+    // @ts-ignore OKTA-464505: backward compatibility support for auth-js@5
+    const isInteractionRequired = oktaAuth.idx.isInteractionRequired || oktaAuth.isInteractionRequired.bind(oktaAuth);
+    if (onAuthResume && isInteractionRequired()) {
       onAuthResume();
       return;
     }
diff --git a/src/Security.tsx b/src/Security.tsx
index d7979b96..aefdc52f 100644
--- a/src/Security.tsx
+++ b/src/Security.tsx
@@ -47,9 +47,9 @@ const Security: React.FC<{
     if (oktaAuth.options.restoreOriginalUri && restoreOriginalUri) {
       console.warn('Two custom restoreOriginalUri callbacks are detected. The one from the OktaAuth configuration will be overridden by the provided restoreOriginalUri prop from the Security component.');
     }
-    oktaAuth.options.restoreOriginalUri = async (oktaAuth: unknown, originalUri: string) => {
+    oktaAuth.options.restoreOriginalUri = (async (oktaAuth: unknown, originalUri: string) => {
       restoreOriginalUri(oktaAuth as OktaAuth, originalUri);
-    };
+    }) as ((oktaAuth: OktaAuth, originalUri?: string) => Promise<void>);
 
     // Add okta-react userAgent
     if (oktaAuth._oktaUserAgent) {
diff --git a/test/e2e/harness/package.json b/test/e2e/harness/package.json
index 35e494c4..11e0c96d 100644
--- a/test/e2e/harness/package.json
+++ b/test/e2e/harness/package.json
@@ -4,7 +4,7 @@
   "version": "0.0.8",
   "private": true,
   "dependencies": {
-    "@okta/okta-auth-js": "^5.6.0",
+    "@okta/okta-auth-js": "^6.0.0",
     "@okta/okta-react": "*",
     "@types/node": "^14.14.7",
     "@types/react": "^16.9.56",
diff --git a/test/jest/loginCallback.test.tsx b/test/jest/loginCallback.test.tsx
index 86a93031..f8a5b7c8 100644
--- a/test/jest/loginCallback.test.tsx
+++ b/test/jest/loginCallback.test.tsx
@@ -33,9 +33,11 @@ describe('<LoginCallback />', () => {
         updateAuthState: jest.fn(),
       },
       isLoginRedirect: jest.fn().mockImplementation(() => false),
-      isInteractionRequired: jest.fn().mockImplementation( () => false ),
       handleLoginRedirect: jest.fn().mockImplementation( () => Promise.resolve() ),
       start: jest.fn(),
+      idx: {
+        isInteractionRequired: jest.fn().mockImplementation( () => false ),
+      }
     };
     mockProps = {
       oktaAuth, 
@@ -120,7 +122,7 @@ describe('<LoginCallback />', () => {
     });
 
     it('will trigger a passed onAuthResume function when isInteractionRequired is true', () => {
-      oktaAuth.isInteractionRequired = jest.fn().mockImplementation( () => true );
+      oktaAuth.idx.isInteractionRequired = jest.fn().mockImplementation( () => true );
       const resumeFunction = jest.fn();
       const wrapper = mount(
         <Security {...mockProps}>
@@ -153,7 +155,7 @@ describe('<LoginCallback />', () => {
     });
 
     it('will treat isInteractionRequired like a normal error if not onAuthResume is passed', async () => { 
-      oktaAuth.isInteractionRequired = jest.fn().mockImplementation( () => true );
+      oktaAuth.idx.isInteractionRequired = jest.fn().mockImplementation( () => true );
       const errorMsg = 'error on callback';
       authState = {
         isAuthenticated: false
@@ -212,7 +214,7 @@ describe('<LoginCallback />', () => {
     });
 
     it('renders loading element if onAuthResume is passed', async () => { 
-      oktaAuth.isInteractionRequired = jest.fn().mockImplementation( () => true );
+      oktaAuth.idx.isInteractionRequired = jest.fn().mockImplementation( () => true );
       const resumeFunction = jest.fn();
       const MyLoadingElement = (<p>loading...</p>);
       jest.spyOn(React, 'useEffect').mockImplementation(f => f())
diff --git a/yarn.lock b/yarn.lock
index 99f51908..c20b4150 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1149,14 +1149,6 @@
     "@babel/helper-create-regexp-features-plugin" "^7.14.5"
     "@babel/helper-plugin-utils" "^7.14.5"
 
-"@babel/polyfill@^7.10.1":
-  version "7.12.1"
-  resolved "https://registry.yarnpkg.com/@babel/polyfill/-/polyfill-7.12.1.tgz#1f2d6371d1261bbd961f3c5d5909150e12d0bd96"
-  integrity sha512-X0pi0V6gxLi6lFZpGmeNa4zxtwEmCs42isWLNjZZDE0Y8yVfgu0T2OAHlzBbdYlqbW/YXVvoBHpATEM+goCj8g==
-  dependencies:
-    core-js "^2.6.5"
-    regenerator-runtime "^0.13.4"
-
 "@babel/preset-env@7.12.1":
   version "7.12.1"
   resolved "https://registry.yarnpkg.com/@babel/preset-env/-/preset-env-7.12.1.tgz#9c7e5ca82a19efc865384bb4989148d2ee5d7ac2"
@@ -1471,7 +1463,7 @@
   dependencies:
     regenerator-runtime "^0.13.4"
 
-"@babel/runtime@^7.0.0", "@babel/runtime@^7.1.2", "@babel/runtime@^7.10.2", "@babel/runtime@^7.10.3", "@babel/runtime@^7.10.4", "@babel/runtime@^7.10.5", "@babel/runtime@^7.11.2", "@babel/runtime@^7.12.1", "@babel/runtime@^7.12.5", "@babel/runtime@^7.3.4", "@babel/runtime@^7.4.5", "@babel/runtime@^7.5.5", "@babel/runtime@^7.7.2", "@babel/runtime@^7.8.4":
+"@babel/runtime@^7.0.0", "@babel/runtime@^7.1.2", "@babel/runtime@^7.10.2", "@babel/runtime@^7.10.4", "@babel/runtime@^7.10.5", "@babel/runtime@^7.11.2", "@babel/runtime@^7.12.1", "@babel/runtime@^7.12.5", "@babel/runtime@^7.3.4", "@babel/runtime@^7.4.5", "@babel/runtime@^7.5.5", "@babel/runtime@^7.7.2", "@babel/runtime@^7.8.4":
   version "7.15.3"
   resolved "https://registry.yarnpkg.com/@babel/runtime/-/runtime-7.15.3.tgz#2e1c2880ca118e5b2f9988322bd8a7656a32502b"
   integrity sha512-OvwMLqNXkCXSz1kSm58sEsNuhqOx/fKpnUnKnFB5v8uDda5bLNEHNgKPvhDN6IU0LDcnHQ90LlJ0Q6jnyBSIBA==
@@ -2056,13 +2048,13 @@
     mkdirp "^1.0.4"
     rimraf "^3.0.2"
 
-"@okta/okta-auth-js@^5.6.0":
-  version "5.6.0"
-  resolved "https://registry.yarnpkg.com/@okta/okta-auth-js/-/okta-auth-js-5.6.0.tgz#0a0b46dbd679ab0777bf338e0ab81ff1dcca1a7f"
-  integrity sha512-FwGJ2tFAl7matIcIoWA6FuwHXkcaMJhV7b7ENPoB6ftcFQHFItm/S5vf5G7g6wIep0ZTHOA7I8loIOE+TtzEBw==
+"@okta/okta-auth-js@^6.0.0":
+  version "6.0.0"
+  resolved "https://registry.yarnpkg.com/@okta/okta-auth-js/-/okta-auth-js-6.0.0.tgz#5ec34f7d92f6c91a3efeef8a6441175693b6fa74"
+  integrity sha512-ivvAJJKxYKIWIP1dP7Fz8M2j29ie3N+mJ39q4WAWYuUuyzdhmzAWYTIMrUowDsn/6bARDEj6HcIsXHZhFMqEqQ==
   dependencies:
     "@babel/runtime" "^7.12.5"
-    "@okta/okta-idx-js" "0.19.0"
+    "@okta/okta-idx-js" "0.24.0"
     "@peculiar/webcrypto" "1.1.6"
     Base64 "1.1.0"
     atob "^2.1.2"
@@ -2077,25 +2069,24 @@
     webcrypto-shim "^0.1.5"
     xhr2 "0.1.3"
 
-"@okta/okta-idx-js@0.19.0":
-  version "0.19.0"
-  resolved "https://registry.yarnpkg.com/@okta/okta-idx-js/-/okta-idx-js-0.19.0.tgz#f54a6692e530c481d41fac8f4e6d9d1f07683ff5"
-  integrity sha512-gtgPXIA5w/fQH5rqI1ZjrMhTE+seKSj1Xb5ryzeqW/+1YIo630pzk/JPZ1Svc8yth92uxN9M9wJLTYyUcdzI5w==
+"@okta/okta-idx-js@0.24.0":
+  version "0.24.0"
+  resolved "https://registry.yarnpkg.com/@okta/okta-idx-js/-/okta-idx-js-0.24.0.tgz#f7c048a866add49f40fde0e25734fe61998be7c3"
+  integrity sha512-ut4LPYvsXKKQm+PVgsGuoeU1RzVteNHrZPYvhz7REJEaNkY7pKUPBmYxsq9zyjRyzEEkAH7YrWeyhMcW8Lpt9w==
   dependencies:
     "@babel/runtime" "^7.12.5"
     "@babel/runtime-corejs3" "^7.12.5"
     core-js "^3.15.1"
     jsonpath-plus "^5.1.0"
 
-"@okta/okta-signin-widget@^5.12.2":
-  version "5.12.2"
-  resolved "https://registry.yarnpkg.com/@okta/okta-signin-widget/-/okta-signin-widget-5.12.2.tgz#979384e082d29b56528532c3f0a078ba6f3dbd66"
-  integrity sha512-0vpSBYiW6lHRWOtqYYAfQ1etevg6yuC3hvC/V9MIXEWCQ9fkFZDtCzPRzIclMyeEplZJZYohGRs2sxOmNa/dYQ==
+"@okta/okta-signin-widget@^6.0.0":
+  version "6.0.0"
+  resolved "https://registry.yarnpkg.com/@okta/okta-signin-widget/-/okta-signin-widget-6.0.0.tgz#493a54e19c79a76614e073028c8dcab5491d59e1"
+  integrity sha512-nsSKRGeA96YfIX+96gJq4Q0ibiUTDnDA0aOJ7dEYVikLy1pq8aEWrc8VxFG218uVVLd4w38EqHBE4osLpCaiow==
   dependencies:
-    "@babel/polyfill" "^7.10.1"
-    "@babel/runtime" "^7.10.3"
-    cross-fetch "^3.0.4"
+    cross-fetch "^3.1.5"
     handlebars "^4.5.3"
+    jasmine "^4.0.1"
     q "1.4.1"
     u2f-api-polyfill "0.4.3"
     underscore "1.13.1"
@@ -5501,7 +5492,7 @@ core-js-pure@^3.16.0:
   resolved "https://registry.yarnpkg.com/core-js-pure/-/core-js-pure-3.16.1.tgz#b997df2669c957a5b29f06e95813a171f993592e"
   integrity sha512-TyofCdMzx0KMhi84mVRS8rL1XsRk2SPUNz2azmth53iRN0/08Uim9fdhQTaZTG1LqaXHYVci4RDHka6WrXfnvg==
 
-core-js@^2.4.0, core-js@^2.4.1, core-js@^2.5.0, core-js@^2.6.5:
+core-js@^2.4.0, core-js@^2.4.1, core-js@^2.5.0:
   version "2.6.12"
   resolved "https://registry.yarnpkg.com/core-js/-/core-js-2.6.12.tgz#d9333dfa7b065e347cc5682219d6f690859cc2ec"
   integrity sha512-Kb2wC0fvsWfQrgk8HU5lW6U/Lcs8+9aaYcy4ZFc6DDlo4nZ7n70dEgE5rtR0oG6ufKDUnrwfWL1mXR5ljDatrQ==
@@ -5586,13 +5577,20 @@ cross-env@^7.0.3:
   dependencies:
     cross-spawn "^7.0.1"
 
-cross-fetch@^3.0.4, cross-fetch@^3.0.6:
+cross-fetch@^3.0.6:
   version "3.1.4"
   resolved "https://registry.yarnpkg.com/cross-fetch/-/cross-fetch-3.1.4.tgz#9723f3a3a247bf8b89039f3a380a9244e8fa2f39"
   integrity sha512-1eAtFWdIubi6T4XPy6ei9iUFoKpUkIF971QLN8lIvvvwueI65+Nw5haMNKUwfJxabqlIIDODJKGrQ66gxC0PbQ==
   dependencies:
     node-fetch "2.6.1"
 
+cross-fetch@^3.1.5:
+  version "3.1.5"
+  resolved "https://registry.yarnpkg.com/cross-fetch/-/cross-fetch-3.1.5.tgz#e1389f44d9e7ba767907f7af8454787952ab534f"
+  integrity sha512-lvb1SBsI0Z7GDwmuid+mU3kWVBwTVUbe7S0H52yaaAdQOXq2YktTCZdlAcNKFzE6QtRz0snpw9bNiPeOIkkQvw==
+  dependencies:
+    node-fetch "2.6.7"
+
 cross-spawn-with-kill@^1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/cross-spawn-with-kill/-/cross-spawn-with-kill-1.0.0.tgz#6d76b7bbfd148eb10bd0322fceb180ea9b0477a8"
@@ -9931,6 +9929,11 @@ jake@^10.6.1:
     filelist "^1.0.1"
     minimatch "^3.0.4"
 
+jasmine-core@^4.0.0:
+  version "4.0.0"
+  resolved "https://registry.yarnpkg.com/jasmine-core/-/jasmine-core-4.0.0.tgz#8299ed38a100c47a1d154af63449a40967a7be5c"
+  integrity sha512-tq24OCqHElgU9KDpb/8O21r1IfotgjIzalfW9eCmRR40LZpvwXT68iariIyayMwi0m98RDt16aljdbwK0sBMmQ==
+
 jasmine-core@~2.6.2:
   version "2.6.4"
   resolved "https://registry.yarnpkg.com/jasmine-core/-/jasmine-core-2.6.4.tgz#dec926cd0a9fa287fb6db5c755fa487e74cecac5"
@@ -9972,6 +9975,14 @@ jasmine@2.8.0:
     glob "^7.0.6"
     jasmine-core "~2.8.0"
 
+jasmine@^4.0.1:
+  version "4.0.2"
+  resolved "https://registry.yarnpkg.com/jasmine/-/jasmine-4.0.2.tgz#6f5ff7fbf6b67f56600235fdb7d299ac52876c4b"
+  integrity sha512-YsrgxJQEggxzByYe4j68eQLOiQeSrPDYGv4sHhGBp3c6HHdq+uPXeAQ73kOAQpdLZ3/0zN7x/TZTloqeE1/qIA==
+  dependencies:
+    glob "^7.1.6"
+    jasmine-core "^4.0.0"
+
 jasminewd2@^2.1.0:
   version "2.2.0"
   resolved "https://registry.yarnpkg.com/jasminewd2/-/jasminewd2-2.2.0.tgz#e37cf0b17f199cce23bea71b2039395246b4ec4e"
@@ -12165,6 +12176,13 @@ node-fetch@2.6.1:
   resolved "https://registry.yarnpkg.com/node-fetch/-/node-fetch-2.6.1.tgz#045bd323631f76ed2e2b55573394416b639a0052"
   integrity sha512-V4aYg89jEoVRxRb2fJdAg8FHvI7cEyYdVAh94HH0UIK8oJxUfkjlDQN9RbMx+bEjP7+ggMiFRprSti032Oipxw==
 
+node-fetch@2.6.7:
+  version "2.6.7"
+  resolved "https://registry.yarnpkg.com/node-fetch/-/node-fetch-2.6.7.tgz#24de9fba827e3b4ae44dc8b20256a379160052ad"
+  integrity sha512-ZjMPFEfVx5j+y2yF35Kzx5sF7kDzxuDj6ziH4FFbOp87zKDZNx8yExJIb05OGF4Nlt9IHFIMBkRl41VdvcNdbQ==
+  dependencies:
+    whatwg-url "^5.0.0"
+
 node-forge@^0.10.0:
   version "0.10.0"
   resolved "https://registry.yarnpkg.com/node-forge/-/node-forge-0.10.0.tgz#32dea2afb3e9926f02ee5ce8794902691a676bf3"
@@ -16676,6 +16694,11 @@ tr46@^2.1.0:
   dependencies:
     punycode "^2.1.1"
 
+tr46@~0.0.3:
+  version "0.0.3"
+  resolved "https://registry.yarnpkg.com/tr46/-/tr46-0.0.3.tgz#8184fd347dac9cdc185992f3a6622e14b9d9ab6a"
+  integrity sha1-gYT9NH2snNwYWZLzpmIuFLnZq2o=
+
 tryer@^1.0.1:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/tryer/-/tryer-1.0.1.tgz#f2c85406800b9b0f74c9f7465b81eaad241252f8"
@@ -17391,6 +17414,11 @@ webdriver-manager@^12.0.6, webdriver-manager@^12.1.4:
     semver "^5.3.0"
     xml2js "^0.4.17"
 
+webidl-conversions@^3.0.0:
+  version "3.0.1"
+  resolved "https://registry.yarnpkg.com/webidl-conversions/-/webidl-conversions-3.0.1.tgz#24534275e2a7bc6be7bc86611cc16ae0a5654871"
+  integrity sha1-JFNCdeKnvGvnvIZhHMFq4KVlSHE=
+
 webidl-conversions@^4.0.2:
   version "4.0.2"
   resolved "https://registry.yarnpkg.com/webidl-conversions/-/webidl-conversions-4.0.2.tgz#a855980b1f0b6b359ba1d5d9fb39ae941faa63ad"
@@ -17639,6 +17667,14 @@ whatwg-mimetype@^2.1.0, whatwg-mimetype@^2.2.0, whatwg-mimetype@^2.3.0:
   resolved "https://registry.yarnpkg.com/whatwg-mimetype/-/whatwg-mimetype-2.3.0.tgz#3d4b1e0312d2079879f826aff18dbeeca5960fbf"
   integrity sha512-M4yMwr6mAnQz76TbJm914+gPpB/nCwvZbJU28cUD6dR004SAxDLOOSUaB1JDRqLtaOV/vi0IC5lEAGFgrjGv/g==
 
+whatwg-url@^5.0.0:
+  version "5.0.0"
+  resolved "https://registry.yarnpkg.com/whatwg-url/-/whatwg-url-5.0.0.tgz#966454e8765462e37644d3626f6742ce8b70965d"
+  integrity sha1-lmRU6HZUYuN2RNNib2dCzotwll0=
+  dependencies:
+    tr46 "~0.0.3"
+    webidl-conversions "^3.0.0"
+
 whatwg-url@^6.4.1:
   version "6.5.0"
   resolved "https://registry.yarnpkg.com/whatwg-url/-/whatwg-url-6.5.0.tgz#f2df02bff176fd65070df74ad5ccbb5a199965a8"