diff --git a/.storybook/preview-head.html b/.storybook/preview-head.html
index 6d16920b164e..159d81782828 100644
--- a/.storybook/preview-head.html
+++ b/.storybook/preview-head.html
@@ -49,6 +49,7 @@
     OS: {
       hasCustomTitleBar: () => false,
     },
+    config: {},
   };
 
   window.ConversationController = window.ConversationController || {};
diff --git a/app/main.ts b/app/main.ts
index 301fa3e85a47..55266627d78d 100644
--- a/app/main.ts
+++ b/app/main.ts
@@ -424,6 +424,7 @@ async function prepareUrl(
     version: app.getVersion(),
     buildCreation: config.get<number>('buildCreation'),
     buildExpiration: config.get<number>('buildExpiration'),
+    challengeUrl: config.get<string>('challengeUrl'),
     serverUrl: config.get<string>('serverUrl'),
     storageUrl: config.get<string>('storageUrl'),
     updatesUrl: config.get<string>('updatesUrl'),
@@ -441,6 +442,7 @@ async function prepareUrl(
     contentProxyUrl: config.get<string>('contentProxyUrl'),
     sfuUrl: config.get('sfuUrl'),
     reducedMotionSetting: animationSettings.prefersReducedMotion,
+    registrationChallengeUrl: config.get<string>('registrationChallengeUrl'),
     serverPublicParams: config.get<string>('serverPublicParams'),
     serverTrustRoot: config.get<string>('serverTrustRoot'),
     theme,
diff --git a/config/default.json b/config/default.json
index 79ecc6d276d2..993164aa8bbf 100644
--- a/config/default.json
+++ b/config/default.json
@@ -13,6 +13,8 @@
   "artCreatorUrl": "https://create.staging.signal.art",
   "updatesPublicKey": "05fd7dd3de7149dc0a127909fee7de0f7620ddd0de061b37a2c303e37de802a401",
   "sfuUrl": "https://sfu.voip.signal.org/",
+  "challengeUrl": "https://signalcaptchas.org/staging/challenge/generate.html",
+  "registrationChallengeUrl": "https://signalcaptchas.org/staging/registration/generate.html",
   "updatesEnabled": false,
   "enableCI": false,
   "forcePreloadBundle": false,
diff --git a/config/production.json b/config/production.json
index 995b7af9f256..12895219887d 100644
--- a/config/production.json
+++ b/config/production.json
@@ -8,6 +8,8 @@
     "2": "https://cdn2.signal.org"
   },
   "artCreatorUrl": "https://create.signal.art",
+  "challengeUrl": "https://signalcaptchas.org/challenge/generate.html",
+  "registrationChallengeUrl": "https://signalcaptchas.org/registration/generate.html",
   "serverPublicParams": "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",
   "serverTrustRoot": "BXu6QIKVz5MA8gstzfOgRQGqyLqOwNKHL6INkv3IHWMF",
   "updatesEnabled": true
diff --git a/ts/challenge.ts b/ts/challenge.ts
index 0086ae086332..0f4d5daea778 100644
--- a/ts/challenge.ts
+++ b/ts/challenge.ts
@@ -16,7 +16,7 @@ import { assertDev } from './util/assert';
 import { isOlderThan } from './util/timestamp';
 import { parseRetryAfterWithDefault } from './util/parseRetryAfter';
 import { clearTimeoutIfNecessary } from './util/clearTimeoutIfNecessary';
-import { getEnvironment, Environment } from './environment';
+import { missingCaseError } from './util/missingCaseError';
 import type { StorageInterface } from './types/Storage.d';
 import * as Errors from './types/errors';
 import { HTTPError } from './textsecure/Errors';
@@ -93,9 +93,6 @@ export type RequestCaptchaOptionsType = Readonly<{
 }>;
 
 const DEFAULT_EXPIRE_AFTER = 24 * 3600 * 1000; // one day
-const CAPTCHA_URL = 'https://signalcaptchas.org/challenge/generate.html';
-const CAPTCHA_STAGING_URL =
-  'https://signalcaptchas.org/staging/challenge/generate.html';
 
 function shouldStartQueue(registered: RegisteredChallengeType): boolean {
   // No retryAt provided; waiting for user to complete captcha
@@ -110,11 +107,14 @@ function shouldStartQueue(registered: RegisteredChallengeType): boolean {
   return false;
 }
 
-export function getChallengeURL(): string {
-  if (getEnvironment() === Environment.Staging) {
-    return CAPTCHA_STAGING_URL;
+export function getChallengeURL(type: 'chat' | 'registration'): string {
+  if (type === 'chat') {
+    return window.SignalContext.config.challengeUrl;
   }
-  return CAPTCHA_URL;
+  if (type === 'registration') {
+    return window.SignalContext.config.registrationChallengeUrl;
+  }
+  throw missingCaseError(type);
 }
 
 // Note that even though this is a class - only one instance of
diff --git a/ts/components/StandaloneRegistration.tsx b/ts/components/StandaloneRegistration.tsx
index a9adb9806853..d1ebb9c8548e 100644
--- a/ts/components/StandaloneRegistration.tsx
+++ b/ts/components/StandaloneRegistration.tsx
@@ -7,6 +7,7 @@ import type { Plugin } from 'intl-tel-input';
 import intlTelInput from 'intl-tel-input';
 
 import { strictAssert } from '../util/assert';
+import * as log from '../logging/log';
 import { parseNumber } from '../util/libphonenumberUtil';
 import { getChallengeURL } from '../challenge';
 
@@ -128,7 +129,9 @@ export function StandaloneRegistration({
         return;
       }
 
-      document.location.href = getChallengeURL();
+      const url = getChallengeURL('registration');
+      log.info(`StandaloneRegistration: navigating to ${url}`);
+      document.location.href = url;
       if (!window.Signal.challengeHandler) {
         setError('Captcha handler is not ready!');
         return;
diff --git a/ts/state/smart/CaptchaDialog.tsx b/ts/state/smart/CaptchaDialog.tsx
index 341b757a3d11..7f3682b31dd1 100644
--- a/ts/state/smart/CaptchaDialog.tsx
+++ b/ts/state/smart/CaptchaDialog.tsx
@@ -8,6 +8,7 @@ import type { StateType } from '../reducer';
 import { getIntl } from '../selectors/user';
 import { isChallengePending } from '../selectors/network';
 import { getChallengeURL } from '../../challenge';
+import * as log from '../../logging/log';
 
 const mapStateToProps = (state: StateType) => {
   return {
@@ -16,7 +17,9 @@ const mapStateToProps = (state: StateType) => {
     i18n: getIntl(state),
 
     onContinue() {
-      document.location.href = getChallengeURL();
+      const url = getChallengeURL('chat');
+      log.info(`CaptchaDialog: navigating to ${url}`);
+      document.location.href = url;
     },
   };
 };
diff --git a/ts/types/RendererConfig.ts b/ts/types/RendererConfig.ts
index 0bdf144ba258..d2cb8801caa6 100644
--- a/ts/types/RendererConfig.ts
+++ b/ts/types/RendererConfig.ts
@@ -31,6 +31,7 @@ export const rendererConfigSchema = z.object({
   buildExpiration: z.number(),
   cdnUrl0: configRequiredStringSchema,
   cdnUrl2: configRequiredStringSchema,
+  challengeUrl: configRequiredStringSchema,
   certificateAuthority: configRequiredStringSchema,
   contentProxyUrl: configRequiredStringSchema,
   crashDumpsPath: configRequiredStringSchema,
@@ -44,6 +45,7 @@ export const rendererConfigSchema = z.object({
   nodeVersion: configRequiredStringSchema,
   proxyUrl: configOptionalStringSchema,
   reducedMotionSetting: z.boolean(),
+  registrationChallengeUrl: configRequiredStringSchema,
   serverPublicParams: configRequiredStringSchema,
   serverTrustRoot: configRequiredStringSchema,
   serverUrl: configRequiredStringSchema,