diff --git a/packages/mp/pyproject.toml b/packages/mp/pyproject.toml
index 7b1e5a30b4..e60fca277b 100644
--- a/packages/mp/pyproject.toml
+++ b/packages/mp/pyproject.toml
@@ -1,6 +1,6 @@
 [project]
 name = "mp"
-version = "1.28.10"
+version = "1.28.11"
 description = "General Purpose CLI tool for Google SecOps Marketplace"
 readme = "README.md"
 authors = [
diff --git a/packages/mp/src/mp/core/update_checker.py b/packages/mp/src/mp/core/update_checker.py
index 6475666d52..8876ddda67 100644
--- a/packages/mp/src/mp/core/update_checker.py
+++ b/packages/mp/src/mp/core/update_checker.py
@@ -40,7 +40,7 @@ def __init__(self) -> None:
         self._new_version: str | None = None
         self._check_thread: threading.Thread | None = None
 
-    def start_background_check(self, current_version: str) -> None:
+    def start_background_check(self, current_version: str | None) -> None:
         """Start a background thread to check for updates."""
         if current_version == "unknown":
             return
@@ -60,7 +60,7 @@ def print_warning_if_needed(self) -> None:
         if self._new_version:
             _print_version_warning(self._new_version)
 
-    def _check_update_worker(self, current_version: str) -> None:
+    def _check_update_worker(self, current_version: str | None) -> None:
         with suppress(
             requests.RequestException,
             requests.HTTPError,
@@ -73,12 +73,16 @@ def _check_update_worker(self, current_version: str) -> None:
             data: dict[str, Any] = tomllib.loads(response.text)
             remote_version: str | None = data.get("project", {}).get("version")
 
-            if remote_version and parse_version(remote_version) > parse_version(current_version):
+            if (
+                remote_version is not None
+                and current_version is not None
+                and parse_version(remote_version) > parse_version(current_version)
+            ):
                 self._new_version = remote_version
 
 
 def _print_version_warning(remote_version: str) -> None:
-    current_version: str = get_mp_version()
+    current_version: str | None = get_mp_version()
     message: str = (
         f"\n[bold yellow]WARNING:[/bold yellow] A newer version of mp "
         f"({current_version} -> {remote_version}) is available.\n"
@@ -95,12 +99,12 @@ def print_mp_version(*, value: bool) -> None:
 
     """
     if value:
-        version: str = get_mp_version()
+        version: str | None = get_mp_version()
         rich.print(f"mp {version}")
         raise typer.Exit
 
 
-def get_mp_version() -> str:
+def get_mp_version() -> str | None:
     """Get the current version of mp.
 
     Returns:
diff --git a/packages/mp/src/mp/main.py b/packages/mp/src/mp/main.py
index 521d461d8f..11d9ce57da 100644
--- a/packages/mp/src/mp/main.py
+++ b/packages/mp/src/mp/main.py
@@ -63,7 +63,6 @@ def main() -> None:
 
 @app.callback(invoke_without_command=True)
 def version_check(
-    ctx: typer.Context,
     *,
     _version: Annotated[
         bool,
@@ -78,7 +77,6 @@ def version_check(
 ) -> None:
     """Set up mp tool and initialize background tasks."""
     checker: UpdateChecker = UpdateChecker()
-    ctx.obj = checker
     checker.start_background_check(get_mp_version())
     atexit.register(checker.print_warning_if_needed)
 
diff --git a/packages/mp/uv.lock b/packages/mp/uv.lock
index 29c154e1b6..fb6034b425 100644
--- a/packages/mp/uv.lock
+++ b/packages/mp/uv.lock
@@ -396,7 +396,7 @@ wheels = [
 
 [[package]]
 name = "mp"
-version = "1.28.10"
+version = "1.28.11"
 source = { editable = "." }
 dependencies = [
     { name = "anyio" },