diff --git a/src/Illuminate/Cache/RedisTaggedCache.php b/src/Illuminate/Cache/RedisTaggedCache.php
index 12209caf0107..7a28d82d29e0 100644
--- a/src/Illuminate/Cache/RedisTaggedCache.php
+++ b/src/Illuminate/Cache/RedisTaggedCache.php
@@ -77,14 +77,14 @@ public function forever($key, $value)
     /**
      * Remove all items from the cache.
      *
-     * @return void
+     * @return bool
      */
     public function flush()
     {
         $this->deleteForeverKeys();
         $this->deleteStandardKeys();
 
-        parent::flush();
+        return parent::flush();
     }
 
     /**
diff --git a/src/Illuminate/Cache/TaggedCache.php b/src/Illuminate/Cache/TaggedCache.php
index c37025d7c2de..88f1f8e31644 100644
--- a/src/Illuminate/Cache/TaggedCache.php
+++ b/src/Illuminate/Cache/TaggedCache.php
@@ -56,11 +56,13 @@ public function decrement($key, $value = 1)
     /**
      * Remove all items from the cache.
      *
-     * @return void
+     * @return bool
      */
     public function flush()
     {
         $this->tags->reset();
+
+        return true;
     }
 
     /**