diff --git a/package-lock.json b/package-lock.json
index 6b916f25..f21e6fe4 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -13,7 +13,7 @@
         "@angular/core": "^20.3.31",
         "@angular/platform-browser": "^20.3.31",
         "@angular/router": "^20.3.31",
-        "@auth0/auth0-spa-js": "^2.24.1",
+        "@auth0/auth0-spa-js": "^2.26.0",
         "rxjs": "^6.6.7",
         "tslib": "^2.8.1",
         "zone.js": "~0.15.1"
@@ -995,20 +995,18 @@
       "license": "MIT"
     },
     "node_modules/@auth0/auth0-auth-js": {
-      "version": "1.12.0",
-      "integrity": "sha512-94r29UxcFEdroO74TUqu5KYy5hSKa6mCXY8lu4hADiyES8qthlSCwaCPEW1adpM5hdheltQ7s1o9TsK8Btyjvg==",
-      "license": "MIT",
+      "version": "1.15.0",
+      "integrity": "sha512-obn/Qhxx3eNs2wV6/lLsIDIcEiSJvBEEy15hppB5Me1j2No2toa7KqQcXHBCyGX4mBBdVnxZJBjEX6E4WanYwg==",
       "dependencies": {
         "jose": "^6.0.8",
         "openid-client": "^6.8.0"
       }
     },
     "node_modules/@auth0/auth0-spa-js": {
-      "version": "2.24.1",
-      "integrity": "sha512-iS18fBlWWxQ/FPtWgWzYYEImsNRumJG2cZ08xV0HsEmWtTBv+54A+fnyFx9eiNBP7cLp0emwDDjgeG+hQEbVBA==",
-      "license": "MIT",
+      "version": "2.26.0",
+      "integrity": "sha512-pv2Si9bJioQqTgk/doh0nIKgnpF1TEW/CvPmC1eYUgwPk/cUIwIzNSPShFBM4G2MnR+pbeD2HhFH6ChJAzIeqg==",
       "dependencies": {
-        "@auth0/auth0-auth-js": "^1.10.0",
+        "@auth0/auth0-auth-js": "^1.15.0",
         "browser-tabs-lock": "^1.3.0",
         "dpop": "^2.1.1",
         "es-cookie": "~1.3.2"
@@ -13979,9 +13977,8 @@
       }
     },
     "node_modules/jose": {
-      "version": "6.2.8",
-      "integrity": "sha512-Bsdjwm3Qsd/P0jR+BHDe3LytDfY7WBq2HmCCLIwuVRHMuEC9ae7/R474GIUdF1NgCyZjzVo/A9DOiOBtXq8ZoQ==",
-      "license": "MIT",
+      "version": "6.2.12",
+      "integrity": "sha512-9NiFmJEex0sy2Dk58j2UGBSHgUs2ypF9eZSu4L6vjOX3Dp96Sw1F3uL+H+D1sx02jZZdzUT0HgvCy59CuvXcWw==",
       "funding": {
         "url": "https://github.com/sponsors/panva"
       }
@@ -16726,9 +16723,8 @@
       }
     },
     "node_modules/oauth4webapi": {
-      "version": "3.8.6",
-      "integrity": "sha512-iwemM91xz8nryHti2yTmg5fhyEMVOkOXwHNqbvcATjyajb5oQxCQzrNOA6uElRHuMhQQTKUyFKV9y/CNyg25BQ==",
-      "license": "MIT",
+      "version": "3.8.8",
+      "integrity": "sha512-8N28E+a/oxfXWBgOMt+ZP/JUf/XR+IFbvkAEPP3gznXOMv9BpAAwiIj0TFNz3tGTPc0ZQ8zmWBNgN1nAys0gng==",
       "funding": {
         "url": "https://github.com/sponsors/panva"
       }
@@ -17025,12 +17021,11 @@
       }
     },
     "node_modules/openid-client": {
-      "version": "6.8.4",
-      "integrity": "sha512-QSw0BA08piujetEwfZsHoTrDpMEha7GDZDicQqVwX4u0ChCjefvjDB++TZ8BTg76UpwhzIQgdvvfgfl3HpCSAw==",
-      "license": "MIT",
+      "version": "6.8.8",
+      "integrity": "sha512-ZsucJA5Ad04Uv7YN4ql+s4GXNmb9uAYQwyJTsJx7CH/MX3JZioLE2pVKi1SC+YrbSLA4Px3Gi30dMjgOZtb6pA==",
       "dependencies": {
-        "jose": "^6.2.2",
-        "oauth4webapi": "^3.8.5"
+        "jose": "^6.2.12",
+        "oauth4webapi": "^3.8.8"
       },
       "funding": {
         "url": "https://github.com/sponsors/panva"
diff --git a/package.json b/package.json
index 938bb5cf..df9c5f23 100644
--- a/package.json
+++ b/package.json
@@ -30,7 +30,7 @@
     "@angular/core": "^20.3.31",
     "@angular/platform-browser": "^20.3.31",
     "@angular/router": "^20.3.31",
-    "@auth0/auth0-spa-js": "^2.24.1",
+    "@auth0/auth0-spa-js": "^2.26.0",
     "rxjs": "^6.6.7",
     "tslib": "^2.8.1",
     "zone.js": "~0.15.1"
diff --git a/projects/auth0-angular/package.json b/projects/auth0-angular/package.json
index 28a768ee..226b2e19 100644
--- a/projects/auth0-angular/package.json
+++ b/projects/auth0-angular/package.json
@@ -32,7 +32,7 @@
   },
   "dependencies": {
     "tslib": "^2.0.0",
-    "@auth0/auth0-spa-js": "^2.21.0"
+    "@auth0/auth0-spa-js": "^2.26.0"
   },
   "schematics": "./schematics/collection.json"
 }
diff --git a/projects/auth0-angular/src/lib/auth.interceptor.ts b/projects/auth0-angular/src/lib/auth.interceptor.ts
index 5bcd37de..d6142eb2 100644
--- a/projects/auth0-angular/src/lib/auth.interceptor.ts
+++ b/projects/auth0-angular/src/lib/auth.interceptor.ts
@@ -118,16 +118,20 @@ export class AuthHttpInterceptor implements HttpInterceptor {
   ): Observable<string> {
     return of(this.auth0Client).pipe(
       concatMap((client) => client.getTokenSilently(options)),
-      map((tokenOrResponse: string | GetTokenSilentlyVerboseResponse) => {
-        // spa-js returns undefined when cacheMode is 'cache-only' with no
-        // cached entry, or when an IPSIE session_expiry ceiling is reached.
-        if (!tokenOrResponse) {
-          throw { error: 'missing_token' };
+      map(
+        (
+          tokenOrResponse: string | GetTokenSilentlyVerboseResponse | undefined
+        ) => {
+          // spa-js returns undefined when cacheMode is 'cache-only' with no
+          // cached entry, or when an IPSIE session_expiry ceiling is reached.
+          if (!tokenOrResponse) {
+            throw { error: 'missing_token' };
+          }
+          // Extract access_token from detailed response when detailedResponse: true
+          if (typeof tokenOrResponse === 'string') return tokenOrResponse;
+          return tokenOrResponse.access_token;
         }
-        // Extract access_token from detailed response when detailedResponse: true
-        if (typeof tokenOrResponse === 'string') return tokenOrResponse;
-        return tokenOrResponse.access_token;
-      }),
+      ),
       tap((token) => this.authState.setAccessToken(token)),
       catchError((error) => {
         this.authState.refresh();
diff --git a/projects/auth0-angular/src/lib/auth.service.ts b/projects/auth0-angular/src/lib/auth.service.ts
index f930962d..d9e6c8da 100644
--- a/projects/auth0-angular/src/lib/auth.service.ts
+++ b/projects/auth0-angular/src/lib/auth.service.ts
@@ -252,14 +252,16 @@ export class AuthService<TAppState extends AppState = AppState>
    */
   getAccessTokenSilently(
     options: GetTokenSilentlyOptions & { detailedResponse: true }
-  ): Observable<GetTokenSilentlyVerboseResponse>;
+  ): Observable<GetTokenSilentlyVerboseResponse | undefined>;
 
   /**
    * Fetches a new access token and returns it.
    *
    * @param options The options for configuring the token fetch.
    */
-  getAccessTokenSilently(options?: GetTokenSilentlyOptions): Observable<string>;
+  getAccessTokenSilently(
+    options?: GetTokenSilentlyOptions
+  ): Observable<string | undefined>;
 
   /**
    * ```js
@@ -290,7 +292,7 @@ export class AuthService<TAppState extends AppState = AppState>
    */
   getAccessTokenSilently(
     options: GetTokenSilentlyOptions = {}
-  ): Observable<string | GetTokenSilentlyVerboseResponse> {
+  ): Observable<string | GetTokenSilentlyVerboseResponse | undefined> {
     return of(this.auth0Client).pipe(
       concatMap((client) =>
         options.detailedResponse === true
@@ -577,10 +579,7 @@ export class AuthService<TAppState extends AppState = AppState>
     updateAuthenticationMethod: (
       id: string,
       data: UpdateAuthenticationMethodRequest
-    ) =>
-      from(
-        this.auth0Client.myAccount.updateAuthenticationMethod(id, data)
-      ),
+    ) => from(this.auth0Client.myAccount.updateAuthenticationMethod(id, data)),
     enrollmentChallenge: (options: EnrollmentChallengeOptions) =>
       from(this.auth0Client.myAccount.enrollmentChallenge(options)),
     enrollmentVerify: (options: EnrollmentVerifyOptions) =>