diff --git a/README.md b/README.md
index 101cc5b..4469f33 100644
--- a/README.md
+++ b/README.md
@@ -9,7 +9,9 @@
 ![image](https://github.com/DSD-DBS/capella-ros-tools/actions/workflows/lint.yml/badge.svg)
 
 Tools for importing ROS .msg files into Capella `DataPackage`, `DataType` and
-`Class` objects, and exporting those objects into .msg files.
+`Class` objects, or exporting those objects to .msg files.
+
+![Showcase](https://i.imgur.com/hs4EUnL.gif)
 
 # Documentation
 
diff --git a/capella_ros_tools/importer.py b/capella_ros_tools/importer.py
index 54f5b73..05020a4 100644
--- a/capella_ros_tools/importer.py
+++ b/capella_ros_tools/importer.py
@@ -2,7 +2,6 @@
 # SPDX-License-Identifier: Apache-2.0
 """Tool for importing ROS messages to a Capella data package."""
 
-import collections as c
 import typing as t
 
 from capellambse import decl, filehandler, helpers
@@ -29,8 +28,8 @@ def __init__(
         no_deps: bool,
     ):
         self.messages = data_model.MessagePkgDef("root", [], [])
-        self._promise_ids: c.OrderedDict[str, None] = c.OrderedDict()
-        self._promise_id_refs: c.OrderedDict[str, None] = c.OrderedDict()
+        self._promise_ids: dict[str, None] = {}
+        self._promise_id_refs: dict[str, None] = {}
 
         self._add_packages("ros_msgs", msg_path)
         if no_deps: