diff --git a/pytest-embedded-arduino/pytest_embedded_arduino/__init__.py b/pytest-embedded-arduino/pytest_embedded_arduino/__init__.py
index f4c982d0..a2bb2876 100644
--- a/pytest-embedded-arduino/pytest_embedded_arduino/__init__.py
+++ b/pytest-embedded-arduino/pytest_embedded_arduino/__init__.py
@@ -1,11 +1,22 @@
 """Make pytest-embedded plugin work with Arduino."""
 
+import importlib
+
+from pytest_embedded.utils import lazy_load
+
 from .app import ArduinoApp
-from .serial import ArduinoSerial
 
-__all__ = [
-    'ArduinoApp',
-    'ArduinoSerial',
-]
+__getattr__ = lazy_load(
+    importlib.import_module(__name__),
+    {
+        'ArduinoApp': ArduinoApp,
+    },
+    {
+        'ArduinoSerial': '.serial',  # requires esp
+    },
+)
+
+__all__ = ['ArduinoApp', 'ArduinoSerial']
+
 
 __version__ = '1.10.0'
diff --git a/pytest-embedded-idf/pytest_embedded_idf/__init__.py b/pytest-embedded-idf/pytest_embedded_idf/__init__.py
index e25e1f2f..eac2145a 100644
--- a/pytest-embedded-idf/pytest_embedded_idf/__init__.py
+++ b/pytest-embedded-idf/pytest_embedded_idf/__init__.py
@@ -17,8 +17,8 @@
         'CaseTester': CaseTester,
     },
     {
-        'IdfSerial': '.serial',
-        'IdfDut': '.dut',
+        'IdfSerial': '.serial',  # requires esp
+        'IdfDut': '.dut',  # requires esp
     },
 )
 
diff --git a/pytest-embedded-qemu/pytest_embedded_qemu/__init__.py b/pytest-embedded-qemu/pytest_embedded_qemu/__init__.py
index 40392fa0..324706f9 100644
--- a/pytest-embedded-qemu/pytest_embedded_qemu/__init__.py
+++ b/pytest-embedded-qemu/pytest_embedded_qemu/__init__.py
@@ -1,12 +1,28 @@
 """Make pytest-embedded plugin work with QEMU."""
 
+import importlib
+
+from pytest_embedded.utils import lazy_load
+
 DEFAULT_IMAGE_FN = 'flash_image.bin'
 ENCRYPTED_IMAGE_FN = f'encrypted_{DEFAULT_IMAGE_FN}'
 
-from .app import QemuApp  # noqa
 from .dut import QemuDut  # noqa
 from .qemu import Qemu  # noqa
 
+
+__getattr__ = lazy_load(
+    importlib.import_module(__name__),
+    {
+        'Qemu': Qemu,
+        'QemuDut': QemuDut,
+    },
+    {
+        'QemuApp': '.app',  # requires idf
+    },
+)
+
+
 __all__ = [
     'DEFAULT_IMAGE_FN',
     'ENCRYPTED_IMAGE_FN',