diff --git a/.devcontainer/postCreateCommand.sh b/.devcontainer/postCreateCommand.sh
index d25b97e..a6904d0 100644
--- a/.devcontainer/postCreateCommand.sh
+++ b/.devcontainer/postCreateCommand.sh
@@ -10,7 +10,7 @@ uv tool install prek >/dev/null 2>&1 || true
 prek install
 
 # Sync dependencies only if environment missing or manifests changed (safety net; main pre-warm is in image layer)
-if [ ! -d .venv ] || [ pyproject.toml -nt .venv ] || [ uv.lock -nt .venv ]; then
+if [ ! -d .venv ] || [ ! -f uv.lock ] || [ pyproject.toml -nt .venv ] || [ uv.lock -nt .venv ]; then
 	echo "Performing uv sync (post-create)..."
 	uv sync
 else