diff --git a/codestats_box.py b/codestats_box.py
index 4bbbdd5..d8c702c 100644
--- a/codestats_box.py
+++ b/codestats_box.py
@@ -212,6 +212,15 @@ def update_gist(title: str, content: str) -> bool:
     gist = Github(access_token).get_gist(gist_id)
     # Works only for single file. Should we clear all files and create new file?
     old_title = list(gist.files.keys())[0]
+
+    # Fetch current Gist content
+    current_content = gist.files[old_title].content
+
+    # Compare with new content
+    if current_content == content:
+        print("Gist content is already up-to-date. Skipping update.")
+        return # Return without updating
+
     gist.edit(title, {old_title: InputFileContent(content, title)})
     print(f"{title}\n{content}")
 
diff --git a/test_codestats_box.py b/test_codestats_box.py
new file mode 100644
index 0000000..7d0930b
--- /dev/null
+++ b/test_codestats_box.py
@@ -0,0 +1,66 @@
+import unittest
+from unittest.mock import patch, MagicMock, call
+import os
+import sys
+
+# Add the parent directory to sys.path to allow importing codestats_box
+sys.path.append(os.path.abspath(os.path.join(os.path.dirname(__file__), '..')))
+
+from codestats_box import update_gist, GIST_TITLE, DEFAULT_STATS_TYPE
+from github.InputFileContent import InputFileContent # Import for type checking
+
+class TestUpdateGist(unittest.TestCase):
+
+    def setUp(self):
+        # Set dummy environment variables
+        os.environ['GIST_ID'] = 'dummy_gist_id'
+        os.environ['GH_TOKEN'] = 'dummy_gh_token'
+
+        # Patch 'codestats_box.Github'
+        self.github_patcher = patch('codestats_box.Github')
+        self.MockGithub = self.github_patcher.start()
+        self.addCleanup(self.github_patcher.stop) # Ensure the patch is stopped after the test
+
+        # Configure the mock Github object
+        self.mock_github_instance = self.MockGithub.return_value
+        self.mock_gist = MagicMock()
+        self.mock_github_instance.get_gist.return_value = self.mock_gist
+        
+        # Define a mock old_title and initialize gist.files correctly
+        self.old_filename = "mock_old_file.md"
+        # Initialize gist.files as a dictionary with a mock file object
+        # The content here will be the "initial_content" for tests.
+        self.mock_gist.files = {self.old_filename: MagicMock(content="initial_content")}
+
+    def test_update_gist_content_different(self):
+        # self.mock_gist is already configured by setUp with "initial_content"
+        # self.mock_gist.files[self.old_filename].content is already "initial_content"
+
+        new_title = GIST_TITLE[DEFAULT_STATS_TYPE]
+        new_content = "new_content" # This is different from "initial_content"
+
+        update_gist(new_title, new_content)
+
+        self.mock_gist.edit.assert_called_once()
+        args, kwargs = self.mock_gist.edit.call_args
+        self.assertEqual(args[0], new_title)
+        self.assertTrue(self.old_filename in args[1])
+        file_content_obj = args[1][self.old_filename]
+        self.assertIsInstance(file_content_obj, InputFileContent)
+        # Try accessing with the name-mangled version based on dir() output
+        self.assertEqual(file_content_obj._InputFileContent__content, new_content)
+
+    @patch('builtins.print')
+    def test_update_gist_content_same(self, mock_print):
+        # self.mock_gist is already configured by setUp with "initial_content"
+        # self.mock_gist.files[self.old_filename].content is already "initial_content"
+
+        title = GIST_TITLE[DEFAULT_STATS_TYPE]
+        # Call update_gist with the same content as in mock_gist.files
+        update_gist(title, "initial_content")
+
+        self.mock_gist.edit.assert_not_called()
+        mock_print.assert_any_call("Gist content is already up-to-date. Skipping update.")
+
+if __name__ == '__main__':
+    unittest.main()