diff --git a/tests/unit/models/config/__init__.py b/tests/unit/models/config/__init__.py
new file mode 100644
index 00000000..a10dff6d
--- /dev/null
+++ b/tests/unit/models/config/__init__.py
@@ -0,0 +1 @@
+"""Unit tests for models defined in config.py."""
diff --git a/tests/unit/models/requests/__init__.py b/tests/unit/models/requests/__init__.py
new file mode 100644
index 00000000..02792c17
--- /dev/null
+++ b/tests/unit/models/requests/__init__.py
@@ -0,0 +1 @@
+"""Unit tests for models defined in requests.py."""
diff --git a/tests/unit/models/responses/__init__.py b/tests/unit/models/responses/__init__.py
new file mode 100644
index 00000000..cd216896
--- /dev/null
+++ b/tests/unit/models/responses/__init__.py
@@ -0,0 +1 @@
+"""Unit tests for models defined in responses.py."""