diff --git a/composer.json b/composer.json
index 229d7d8..b8d2817 100644
--- a/composer.json
+++ b/composer.json
@@ -19,7 +19,8 @@
         "php": "^7.2|^8.0",
         "illuminate/support": "*",
         "barryvdh/laravel-dompdf": "^0.9.0",
-        "guzzlehttp/guzzle": "^7"
+        "guzzlehttp/guzzle": "^7",
+        "doctrine/dbal": "^3"
     },
     "require-dev": {
         "orchestra/testbench": "^5.2",
diff --git a/database/migrations/2022_02_21_173228_update_cascade_delete.php b/database/migrations/2022_02_21_173228_update_cascade_delete.php
new file mode 100644
index 0000000..fd00cdf
--- /dev/null
+++ b/database/migrations/2022_02_21_173228_update_cascade_delete.php
@@ -0,0 +1,61 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+class UpdateCascadeDelete extends Migration
+{
+    /**
+     * Run the migrations.
+     *
+     * @return void
+     */
+    public function up()
+    {
+        Schema::table(config('workflows.db_prefix').'task_logs', function (Blueprint $table) {
+            $table->bigInteger('task_id')->unsigned()->change();
+            $table->foreign('task_id')->references('id')->on('tasks')->onDelete('cascade');
+        });
+
+        Schema::table(config('workflows.db_prefix').'tasks', function (Blueprint $table) {
+            $table->dropIndex(['workflow_id']);
+            $table->bigInteger('workflow_id')->unsigned()->change();
+            $table->foreign('workflow_id')->references('id')->on('workflows')->onDelete('cascade');
+        });
+
+        Schema::table(config('workflows.db_prefix').'triggers', function (Blueprint $table) {
+            $table->bigInteger('workflow_id')->unsigned()->change();
+            $table->foreign('workflow_id')->references('id')->on('workflows')->onDelete('cascade');
+        });
+
+        Schema::table(config('workflows.db_prefix').'workflow_logs', function (Blueprint $table) {
+            $table->bigInteger('workflow_id')->unsigned()->change();
+            $table->foreign('workflow_id')->references('id')->on('workflows')->onDelete('cascade');
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     *
+     * @return void
+     */
+    public function down()
+    {
+        Schema::table(config('workflows.db_prefix').'tasks', function (Blueprint $table) {
+            $table->dropForeign(['workflow_id']);
+        });
+
+        Schema::table(config('workflows.db_prefix').'triggers', function (Blueprint $table) {
+            $table->dropForeign(['workflow_id']);
+        });
+
+        Schema::table(config('workflows.db_prefix').'workflow_logs', function (Blueprint $table) {
+            $table->dropForeign(['workflow_id']);
+        });
+
+        Schema::table(config('workflows.db_prefix').'task_logs', function (Blueprint $table) {
+            $table->dropForeign(['task_id']);
+        });
+    }
+}
diff --git a/src/Http/Controllers/WorkflowController.php b/src/Http/Controllers/WorkflowController.php
index 9d5e214..098ce6d 100644
--- a/src/Http/Controllers/WorkflowController.php
+++ b/src/Http/Controllers/WorkflowController.php
@@ -57,11 +57,16 @@ public function update(Request $request, $id)
         return redirect(route('workflow.index'));
     }
 
+    /**
+     * Deletes the Workflow and over cascading also the Tasks, TaskLogs, WorkflowLogs and Triggers.
+     *
+     * @param $id
+     * @return \Illuminate\Contracts\Foundation\Application|\Illuminate\Http\RedirectResponse|\Illuminate\Routing\Redirector
+     */
     public function delete($id)
     {
         $workflow = Workflow::find($id);
 
-        //TODO: delete all depending tasks?
         $workflow->delete();
 
         return redirect(route('workflow.index'));