diff --git a/Changelog.md b/Changelog.md
index dc4b052..5c24abe 100644
--- a/Changelog.md
+++ b/Changelog.md
@@ -1,12 +1,21 @@
-# Release 0.1.0
+# Changelog
 
-## Features
+## Release 0.2.0
+
+### Features
+
+- add `update_task` method to `DAG` class
+  - update task parameters from `Task` instance
+
+## Release 0.1.0
+
+### Features
 
 - add clear, get_return_value, get_all_tasks method to DAG class
 
-# Release 0.0.1
+## Release 0.0.1
 
-## Features
+### Features
 
 - First release
     - add operator and module for function scheduling
\ No newline at end of file
diff --git a/example.py b/example.py
index db855e2..2fee1a4 100644
--- a/example.py
+++ b/example.py
@@ -17,7 +17,10 @@ def example_return_func(text):
 # or dag.set_downstream('function_task', 'condition_task')
 # dag.set_downstream('condition_task', 'iter_task')
 converter = Converter(dag)
-converter.convert_list_to_dag(task_order).run('hello_task')
+
+dag.update_task(task_order[2], ['where are you from?'])
+
+converter.convert_list_to_dag(task_order).run(task_order[0])
 
 # print return value of iter_task
 print(dag.get_return_value('iter_task'))
diff --git a/f_scheduler/modules/dag.py b/f_scheduler/modules/dag.py
index 9f2c8fb..be1c514 100644
--- a/f_scheduler/modules/dag.py
+++ b/f_scheduler/modules/dag.py
@@ -22,3 +22,10 @@ def get_return_value(self, task_id):
 
     def get_all_tasks(self):
         return self.tasks
+
+    def update_task(self, task_id, new_param):
+        task = self.tasks[task_id]
+        if task:
+            task.param = new_param
+        else:
+            print(f"No task found with id: {task_id}")
diff --git a/pyproject.toml b/pyproject.toml
index 94c8111..d579951 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -13,7 +13,7 @@ exclude = ['f_scheduler*tests']
 
 [project]
 name = "f-scheduler"
-version = "0.1.0"
+version = "0.2.0"
 description = "Simplify Function Scheduler with Python 3"
 authors = [
     {name = "minwook-shin", email = "minwook0106@gmail.com"},