diff --git a/src/Illuminate/Broadcasting/Broadcasters/AblyBroadcaster.php b/src/Illuminate/Broadcasting/Broadcasters/AblyBroadcaster.php
index 426aa747b9b3..4b4bc818d7ea 100644
--- a/src/Illuminate/Broadcasting/Broadcasters/AblyBroadcaster.php
+++ b/src/Illuminate/Broadcasting/Broadcasters/AblyBroadcaster.php
@@ -3,6 +3,8 @@
 namespace Illuminate\Broadcasting\Broadcasters;
 
 use Ably\AblyRest;
+use Ably\Exceptions\AblyException;
+use Illuminate\Broadcasting\BroadcastException;
 use Illuminate\Support\Str;
 use Symfony\Component\HttpKernel\Exception\AccessDeniedHttpException;
 
@@ -117,11 +119,19 @@ public function generateAblySignature($channelName, $socketId, $userData = null)
      * @param  string  $event
      * @param  array  $payload
      * @return void
+     *
+     * @throws \Illuminate\Broadcasting\BroadcastException
      */
     public function broadcast(array $channels, $event, array $payload = [])
     {
-        foreach ($this->formatChannels($channels) as $channel) {
-            $this->ably->channels->get($channel)->publish($event, $payload);
+        try {
+            foreach ($this->formatChannels($channels) as $channel) {
+                $this->ably->channels->get($channel)->publish($event, $payload);
+            }
+        } catch (AblyException $e) {
+            throw new BroadcastException(
+                sprintf('Ably error: %s', $e->getMessage())
+            );
         }
     }
 
diff --git a/src/Illuminate/Broadcasting/Broadcasters/RedisBroadcaster.php b/src/Illuminate/Broadcasting/Broadcasters/RedisBroadcaster.php
index 2c2dc88c3f76..5ae2e03c8f44 100644
--- a/src/Illuminate/Broadcasting/Broadcasters/RedisBroadcaster.php
+++ b/src/Illuminate/Broadcasting/Broadcasters/RedisBroadcaster.php
@@ -2,8 +2,11 @@
 
 namespace Illuminate\Broadcasting\Broadcasters;
 
+use Illuminate\Broadcasting\BroadcastException;
 use Illuminate\Contracts\Redis\Factory as Redis;
 use Illuminate\Support\Arr;
+use Predis\Connection\ConnectionException;
+use RedisException;
 use Symfony\Component\HttpKernel\Exception\AccessDeniedHttpException;
 
 class RedisBroadcaster extends Broadcaster
@@ -105,6 +108,8 @@ public function validAuthenticationResponse($request, $result)
      * @param  string  $event
      * @param  array  $payload
      * @return void
+     *
+     * @throws \Illuminate\Broadcasting\BroadcastException
      */
     public function broadcast(array $channels, $event, array $payload = [])
     {
@@ -120,10 +125,16 @@ public function broadcast(array $channels, $event, array $payload = [])
             'socket' => Arr::pull($payload, 'socket'),
         ]);
 
-        $connection->eval(
-            $this->broadcastMultipleChannelsScript(),
-            0, $payload, ...$this->formatChannels($channels)
-        );
+        try {
+            $connection->eval(
+                $this->broadcastMultipleChannelsScript(),
+                0, $payload, ...$this->formatChannels($channels)
+            );
+        } catch (ConnectionException|RedisException $e) {
+            throw new BroadcastException(
+                sprintf('Redis error: %s.', $e->getMessage())
+            );
+        }
     }
 
     /**
diff --git a/src/Illuminate/Contracts/Broadcasting/Broadcaster.php b/src/Illuminate/Contracts/Broadcasting/Broadcaster.php
index 1034e4406823..2d317d0a69c3 100644
--- a/src/Illuminate/Contracts/Broadcasting/Broadcaster.php
+++ b/src/Illuminate/Contracts/Broadcasting/Broadcaster.php
@@ -28,6 +28,8 @@ public function validAuthenticationResponse($request, $result);
      * @param  string  $event
      * @param  array  $payload
      * @return void
+     *
+     * @throws \Illuminate\Broadcasting\BroadcastException
      */
     public function broadcast(array $channels, $event, array $payload = []);
 }