diff --git a/output.png b/output.png
new file mode 100644
index 0000000..23ba95e
Binary files /dev/null and b/output.png differ
diff --git a/pyproject.toml b/pyproject.toml
index 315da0b..faa2c35 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -32,6 +32,7 @@ classifiers = [
 dependencies = [
   "click",
   "fastapi",
+  "imgviz",
   "loguru",
   "osam-core @ git+https://github.com/wkentaro/osam-core.git@b54b13ea1c093980faaa03beccfc13853dadbb00",
   "osam-efficientsam @ git+https://github.com/wkentaro/osam-efficientsam.git@main",