diff --git a/src/lightning_app/CHANGELOG.md b/src/lightning_app/CHANGELOG.md
index f18ce518474ad5..0b5e3a455401a0 100644
--- a/src/lightning_app/CHANGELOG.md
+++ b/src/lightning_app/CHANGELOG.md
@@ -22,7 +22,7 @@ The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/).
 - Fixed `DDPStrategy` import in app framework ([#16029](https://github.com/Lightning-AI/lightning/pull/16029))
 - Fixed `AutoScaler` raising an exception when non-default cloud compute is specified ([#15991](https://github.com/Lightning-AI/lightning/pull/15991))
 - Fixed and improvements of login flow ([#16052](https://github.com/Lightning-AI/lightning/pull/16052))
-
+- Fixed detect and ignore venv ([#16056](https://github.com/Lightning-AI/lightning/pull/16056))
 - Fixed the debugger detection mechanism for lightning App in VSCode ([#16068](https://github.com/Lightning-AI/lightning/pull/16068))
 
 
diff --git a/tests/tests_app/runners/test_cloud.py b/tests/tests_app/runners/test_cloud.py
index b80998c14454db..407c51e0ae9ee5 100644
--- a/tests/tests_app/runners/test_cloud.py
+++ b/tests/tests_app/runners/test_cloud.py
@@ -53,6 +53,8 @@
     _generate_works_json_web,
     _validate_build_spec_and_compute,
 )
+from lightning_app.source_code import LocalSourceCodeDir
+from lightning_app.source_code.copytree import _copytree, _parse_lightningignore
 from lightning_app.storage import Drive, Mount
 from lightning_app.testing.helpers import EmptyWork
 from lightning_app.utilities.cloud import _get_project
@@ -121,6 +123,13 @@ def project_id():
     return "test-project-id"
 
 
+def write_file_of_size(path, size):
+    os.makedirs(os.path.dirname(path), exist_ok=True)
+    with open(path, "wb") as f:
+        f.seek(size)
+        f.write(b"\0")
+
+
 DEFAULT_CLUSTER = "litng-ai-03"