diff --git a/CHANGELOG.org b/CHANGELOG.org
index 0205af5..7f77b1c 100644
--- a/CHANGELOG.org
+++ b/CHANGELOG.org
@@ -6,7 +6,9 @@
    Added *sync one* function.
    Added Rsync wrappper.
    Added fzf_prompt, all_labels for choosing a label of source.
-** 0.3.5 <2023-03-01>
+** 0.3.5 <2023-03-01 Wed>
    Added *sync all* function.
    Added all_labels_except for choosing many labels.
    Added fzf function for using all_labels_except.
+** 0.4.1 <2023-03-02 Thu>
+   Added *source update args* function.
diff --git a/pyproject.toml b/pyproject.toml
index 2b08688..e32f854 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "tui-rsync"
-version = "0.1.0"
+version = "0.4.1"
 description = ""
 authors = ["Kostiantyn Klochko <kostya_klochko@ukr.net>"]
 readme = "README.rst"
diff --git a/tui_rsync/cli/source.py b/tui_rsync/cli/source.py
index cba9cdc..e80e818 100644
--- a/tui_rsync/cli/source.py
+++ b/tui_rsync/cli/source.py
@@ -24,9 +24,11 @@ import typer
 
 from models.models import Source, Destination, SyncCommand, Path
 from cli.label_prompt import LabelPrompt
+from cli.source_update import source_update
 
 console = Console()
 source = typer.Typer()
+source.add_typer(source_update, name="update", help="Update sources")
 
 @source.command()
 def add(
@@ -53,7 +55,7 @@ def add(
     """
     [green b]Create[/] a [yellow]new source[/] with a [bold]uniq[/] label.
     [b]The source[/] will be connected to [b]backup destinations[/].
-    [yellow i]Optionally, additional[/] arguments for rsync can be added.g
+    [yellow i]Optionally, additional[/] arguments for rsync can be added.
     """
     if label is None:
         label = LabelPrompt.ask_uuid()
diff --git a/tui_rsync/cli/source_update.py b/tui_rsync/cli/source_update.py
new file mode 100644
index 0000000..e1afa31
--- /dev/null
+++ b/tui_rsync/cli/source_update.py
@@ -0,0 +1,54 @@
+################################################################################
+# Copyright (C) 2023 Kostiantyn Klochko <kostya_klochko@ukr.net>               #
+#                                                                              #
+# This file is part of tui-rsync.                                              #
+#                                                                              #
+# tui-rsync is free software: you can redistribute it and/or modify it under   #
+# uthe terms of the GNU General Public License as published by the Free        #
+# Software Foundation, either version 3 of the License, or (at your option)    #
+# any later version.                                                           #
+#                                                                              #
+# tui-rsync is distributed in the hope that it will be useful, but WITHOUT ANY #
+# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS    #
+# FOR A PARTICULAR PURPOSE. See the GNU General Public License for more        #
+# details.                                                                     #
+#                                                                              #
+# You should have received a copy of the GNU General Public License along with #
+# tui-rsync. If not, see <https://www.gnu.org/licenses/>.                      #
+################################################################################
+
+from rich.console import Console
+from rich.prompt import Prompt
+from typing import List, Optional
+import typer
+
+from models.models import Source, Destination, SyncCommand, Path
+from cli.label_prompt import LabelPrompt
+
+console = Console()
+source_update = typer.Typer()
+
+@source_update.command()
+def args(
+    label: str = typer.Option(
+        None, "--label", "-l",
+        help="[b]The label[/] is a uniq identification of a [b]source[/].",
+        show_default=False
+    ),
+    args: str = typer.Option(
+        None, "--args", "-a",
+        help="[b yellow]rsync[/] [b]arguments[/].",
+        show_default=False
+    )
+
+):
+    """
+    [green b]Update[/] an [yellow]existing source args[/].
+    """
+    if args is None:
+        args = console.input("What is the [yellow b]rsync args of source[/]? ")
+
+    if Source.is_exist(label):
+        src = Source.get_source(label)
+        src.update_args(args)
+
diff --git a/tui_rsync/models/models.py b/tui_rsync/models/models.py
index ad28d6c..c708799 100644
--- a/tui_rsync/models/models.py
+++ b/tui_rsync/models/models.py
@@ -37,6 +37,11 @@ class Path(BaseModel):
 class SyncCommand(BaseModel):
     command = CharField()
 
+    @staticmethod
+    def get_sync_command(args):
+        sync_cmd, _ = SyncCommand.get_or_create(command=args)
+        return sync_cmd
+
     def __str__(self) -> str:
         return self.command
 
@@ -45,6 +50,16 @@ class Source(BaseModel):
     source = ForeignKeyField(Path)
     args = ForeignKeyField(SyncCommand)
 
+    @staticmethod
+    def is_exist(label) -> bool:
+        return Source.select().where(Source.label == label).exists()
+
+    @staticmethod
+    def get_source(label):
+        if not Source.is_exist(label):
+            return None
+        return Source.select().where(Source.label == label).get()
+
     @staticmethod
     def create_save(label:str, source:str, destinations:list[str], args:str):
         src_path, _ = Path.get_or_create(path=source)
@@ -61,6 +76,11 @@ class Source(BaseModel):
         src.save()
         return src
 
+    def update_args(self, args):
+        args_obj = SyncCommand.get_sync_command(args)
+        self.args = args_obj
+        self.save()
+
     def __str__(self) -> str:
         return f"{self.label}"