diff --git a/cli/src/declarations.ts b/cli/src/declarations.ts
index 63b69d1d4e..eddc22c9a9 100644
--- a/cli/src/declarations.ts
+++ b/cli/src/declarations.ts
@@ -523,6 +523,7 @@ export interface LiveUpdateConfig {
   channel: string;
   autoUpdateMethod: AutoUpdateMethod;
   maxVersions?: number;
+  key?: string;
 }
 
 export type AutoUpdateMethod = 'none' | 'background';
@@ -548,4 +549,11 @@ export interface PluginsConfig {
     shell: Portal;
     apps: Portal[];
   };
+
+  /**
+   * Capacitor Live Updates plugin configuration
+   *
+   * @since 4.2.0
+   */
+  LiveUpdates?: LiveUpdateConfig;
 }
diff --git a/cli/src/tasks/copy.ts b/cli/src/tasks/copy.ts
index 2cde358c8b..9e7782726f 100644
--- a/cli/src/tasks/copy.ts
+++ b/cli/src/tasks/copy.ts
@@ -82,6 +82,14 @@ export async function copy(
       usesCapacitorPortals = true;
     }
 
+    let usesLiveUpdates = false;
+    if (
+      allPlugins.filter(plugin => plugin.id === '@capacitor/live-updates')
+        .length > 0
+    ) {
+      usesLiveUpdates = true;
+    }
+
     if (platformName === config.ios.name) {
       if (usesCapacitorPortals) {
         await copyFederatedWebDirs(config, await config.ios.webDirAbs);
@@ -92,6 +100,9 @@ export async function copy(
           config.app.webDirAbs,
         );
       }
+      if (usesLiveUpdates) {
+        await copySecureLiveUpdatesKey(config, config.ios.nativeTargetDirAbs);
+      }
       await copyCapacitorConfig(config, config.ios.nativeTargetDirAbs);
       const cordovaPlugins = await getCordovaPlugins(config, platformName);
       await handleCordovaPluginsJS(cordovaPlugins, config, platformName);
@@ -105,6 +116,9 @@ export async function copy(
           config.app.webDirAbs,
         );
       }
+      if (usesLiveUpdates) {
+        await copySecureLiveUpdatesKey(config, config.android.assetsDirAbs);
+      }
       await copyCapacitorConfig(config, config.android.assetsDirAbs);
       const cordovaPlugins = await getCordovaPlugins(config, platformName);
       await handleCordovaPluginsJS(cordovaPlugins, config, platformName);
@@ -207,3 +221,34 @@ function isPortal(config: any): config is Portal {
     (config as Portal).name !== undefined
   );
 }
+
+async function copySecureLiveUpdatesKey(config: Config, nativeAbsDir: string) {
+  if (!config.app.extConfig?.plugins?.LiveUpdates?.key) {
+    return;
+  }
+
+  const secureLiveUpdatesKeyFile = config.app.extConfig.plugins.LiveUpdates.key;
+  const keyAbsFromPath = join(config.app.rootDir, secureLiveUpdatesKeyFile);
+  const keyAbsToPath = join(nativeAbsDir, basename(keyAbsFromPath));
+  const keyRelToDir = relative(config.app.rootDir, nativeAbsDir);
+
+  if (!(await pathExists(keyAbsFromPath))) {
+    logger.warn(
+      `Cannot copy Secure Live Updates signature file from ${c.strong(
+        keyAbsFromPath,
+      )} to ${keyRelToDir}\n` +
+        `Signature file does not exist at specified key path.`,
+    );
+
+    return;
+  }
+
+  await runTask(
+    `Copying Secure Live Updates key from ${c.strong(
+      secureLiveUpdatesKeyFile,
+    )} to ${keyRelToDir}`,
+    async () => {
+      return fsCopy(keyAbsFromPath, keyAbsToPath);
+    },
+  );
+}