diff --git a/src/RecurrentTasks/ITask.cs b/src/RecurrentTasks/ITask.cs
index b974354..3b66545 100644
--- a/src/RecurrentTasks/ITask.cs
+++ b/src/RecurrentTasks/ITask.cs
@@ -37,6 +37,11 @@ public interface ITask
         /// </remarks>
         TimeSpan Interval { get; set; }
 
+        /// <summary>
+        /// Raises when exception catched during task run.
+        /// </summary>
+        event EventHandler<ExceptionEventArgs> AfterRunFail;
+
         /// <summary>
         /// Start task (first run is delayed for 10-30 sec)
         /// </summary>
diff --git a/src/RecurrentTasks/project.json b/src/RecurrentTasks/project.json
index 508fc96..b64a00b 100644
--- a/src/RecurrentTasks/project.json
+++ b/src/RecurrentTasks/project.json
@@ -1,12 +1,12 @@
 {
-  "version": "2.3.0",
+  "version": "2.4.0",
   "title": "RecurrentTasks",
   "copyright": "Dmitry Popov, 2016",
   "packOptions": {
     "summary": "RecurrentTasks for .NET allows you to run simple recurrent background tasks with specific intervals, without complex frameworks, persistance, etc...",
     "tags": [ "task", "job", "recurrent", "recurring", "aspnetcore" ],
     "owners": [ "Dmitry Popov" ],
-    "releaseNotes": "Dependencies upgraded to 1.0.0 RTM",
+    "releaseNotes": "AfterRunFail event added to ITask",
     "licenseUrl": "https://github.com/justdmitry/RecurrentTasks/blob/master/LICENSE",
     "projectUrl": "https://github.com/justdmitry/RecurrentTasks",
     "repository": {