diff --git a/CHANGELOG.md b/CHANGELOG.md
index 758d6004a50..5ad56e50fd5 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,3 +4,4 @@
 - Release Firestore emulator v1.11.9: Fixes != and not-in operators.
 - Add endpoints to enable/disable background triggers in the Cloud Functions emulator.
 - Fixes `TypeError` that arises when trying to deploy with Firebase Hosting targets that don't exist in the project's firebase.json (#1232).
+- Updates `firebase hosting:channel:delete` to remove the channel from the authorized domains list.
diff --git a/src/commands/hosting-channel-delete.ts b/src/commands/hosting-channel-delete.ts
index a48efd36dae..9c65925b5e3 100644
--- a/src/commands/hosting-channel-delete.ts
+++ b/src/commands/hosting-channel-delete.ts
@@ -1,7 +1,7 @@
 import { bold, underline } from "cli-color";
 
 import { Command } from "../command";
-import { deleteChannel, normalizeName } from "../hosting/api";
+import { deleteChannel, normalizeName, getChannel, removeAuthDomain } from "../hosting/api";
 import { requirePermissions } from "../requirePermissions";
 import * as getProjectId from "../getProjectId";
 import * as requireConfig from "../requireConfig";
@@ -33,6 +33,7 @@ export default new Command("hosting:channel:delete <channelId>")
       const siteId = options.site || (await getInstanceId(options));
 
       channelId = normalizeName(channelId);
+      const channel = await getChannel(projectId, siteId, channelId);
 
       let confirmed = Boolean(options.force);
       if (!confirmed) {
@@ -50,6 +51,9 @@ export default new Command("hosting:channel:delete <channelId>")
       }
 
       await deleteChannel(projectId, siteId, channelId);
+      if (channel) {
+        await removeAuthDomain(projectId, channel.url);
+      }
 
       logLabeledSuccess(
         "hosting:channels",
diff --git a/src/hosting/api.ts b/src/hosting/api.ts
index fe0e787ab67..5df5632afcc 100644
--- a/src/hosting/api.ts
+++ b/src/hosting/api.ts
@@ -373,6 +373,21 @@ export async function addAuthDomain(project: string, url: string): Promise<strin
   return await updateAuthDomains(project, authDomains);
 }
 
+/**
+ * Removes channel domain from Firebase Auth list.
+ * @param project the project ID.
+ * @param url the url of the channel.
+ */
+export async function removeAuthDomain(project: string, url: string): Promise<string[]> {
+  const domains = await getAuthDomains(project);
+  if (!domains.length) {
+    return domains;
+  }
+  const targetDomain = url.replace("https://", "");
+  const authDomains = domains.filter((domain: string) => domain != targetDomain);
+  return updateAuthDomains(project, authDomains);
+}
+
 /**
  * Constructs a list of "clean domains"
  * by including all existing auth domains