diff --git a/.github/workflows/test-suite.yml b/.github/workflows/test-suite.yml
new file mode 100644
index 0000000..688522c
--- /dev/null
+++ b/.github/workflows/test-suite.yml
@@ -0,0 +1,29 @@
+---
+name: Tests
+
+on:
+  push:
+    branches: [ "dev", "master" ]
+  pull_request:
+    branches: [ "dev", "master" ]
+
+jobs:
+  tests:
+    name: "Python ${{ matrix.version }} compatibility"
+    runs-on: "ubuntu-latest"
+
+    strategy:
+      matrix:
+        version: [ "3.6", "3.7", "3.8", "3.9" ]
+
+    steps:
+      - uses: "actions/checkout@v2"
+      - uses: "actions/setup-python@v2"
+        with:
+          python-version: "${{ matrix.version }}"
+      - name: "Install Gpytranslate"
+        run: python setup.py install
+      - name: "Install pytest"
+        run: python -m pip install pytest-asyncio
+      - name: "Run tests"
+        run: python -m pytest tests
diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index f83ae85..a273671 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -18,6 +18,8 @@ jobs:
       - name: Install Gpytranslate
         run: |
           python setup.py install
+      - name: "Install pytest"
+        run: python -m pip install pytest-asyncio
 
       - name: Run tests
         run: |
diff --git a/gpytranslate/gpytranslate.py b/gpytranslate/gpytranslate.py
index 97feb12..06f0ec4 100644
--- a/gpytranslate/gpytranslate.py
+++ b/gpytranslate/gpytranslate.py
@@ -1,5 +1,5 @@
 from collections.abc import Mapping
-from typing import Union, Literal, Dict, List, Any, Final
+from typing import Union, Dict, List, Any
 
 import httpx
 
@@ -7,7 +7,7 @@
 
 
 class Translator:
-    __version__: Final[str] = "1.0.2"
+    __version__: str = "1.0.3"
 
     def __init__(
         self,
@@ -24,7 +24,9 @@ async def translate(
         sourcelang: str = "auto",
         targetlang: str = "en",
         client: str = "gtx",
-        dt: Literal["t", "at", "rm", "bd", "md", "ss", "ex", "rw", "dj"] = "t",
+        dt: str = "t",
+        # Literal["t", "at", "rm", "bd", "md", "ss", "ex", "rw", "dj"] = "t",
+        # broken compatibility with python <3.8 :(
         dj: int = 1,
         **extra
     ) -> Union[TranslatedObject, List[TranslatedObject], Dict[str, TranslatedObject]]:
diff --git a/setup.py b/setup.py
index 03d24ec..4f9964c 100644
--- a/setup.py
+++ b/setup.py
@@ -5,7 +5,7 @@
 
 setuptools.setup(
     name="gpytranslate",
-    version="1.0.2",
+    version="1.0.3",
     author="Davide Galilei",
     author_email="davidegalilei2018@gmail.com",
     description="A Python3 library for translating text using Google Translate API.",
diff --git a/tests/test_detect.py b/tests/test_detect.py
index 9aa1323..4cfd198 100644
--- a/tests/test_detect.py
+++ b/tests/test_detect.py
@@ -1,17 +1,12 @@
-import unittest
+import pytest
+
 
 from gpytranslate import Translator
 
 
-class Test(unittest.IsolatedAsyncioTestCase):
-    async def test_detect(self):
-        translator = Translator()
-        language: str = await translator.detect(
-            text="Ciao Mondo."
-        )
+@pytest.mark.asyncio
+async def test_detect():
+    translator = Translator()
+    language: str = await translator.detect(text="Ciao Mondo.")
 
-        self.assertEqual(
-            language,
-            "it",
-            "Translations are not equal.",
-        )
+    assert language == "it", "Translations are not equal."
diff --git a/tests/test_translate.py b/tests/test_translate.py
index 208c7e9..c29b30e 100644
--- a/tests/test_translate.py
+++ b/tests/test_translate.py
@@ -1,53 +1,50 @@
-import unittest
+import pytest
+
 from typing import List, Dict, Any
 
 from gpytranslate import Translator, TranslatedObject
 
 
-class Test(unittest.IsolatedAsyncioTestCase):
-    async def test_translate_auto(self):
-        translator = Translator()
-        translation: TranslatedObject = await translator.translate(
-            "Ciao Mondo.", targetlang="en"
-        )
-        self.assertEqual(
-            translation.text,
-            "Hello World.",
-            "Translations are not equal.",
-        )
-
-    async def test_translate_source(self):
-        translator = Translator()
-        translation: TranslatedObject = await translator.translate(
-            "Ciao.", sourcelang="it", targetlang="en"
-        )
-
-        self.assertEqual(
-            translation.text,
-            "Hello.",
-            "Translations are not equal.",
-        )
-
-    async def test_translate_list(self):
-        translator = Translator()
-        translations: List[TranslatedObject] = await translator.translate(
-            ["Ciao Mondo.", "Come stai?"], targetlang="en"
-        )
-
-        self.assertEqual(
-            [translation.text for translation in translations],
-            ["Hello World.", "How are you?"],
-            "Translations are not equal.",
-        )
-
-    async def test_translate_dict(self):
-        translator = Translator()
-        translations: Dict[Any, TranslatedObject] = await translator.translate(
-            {1: "Ciao Mondo.", 2: "Come stai?"}, targetlang="en"
-        )
-
-        self.assertEqual(
-            {k: v.text for k, v in translations.items()},
-            {1: "Hello World.", 2: "How are you?"},
-            "Translations are not equal.",
-        )
+@pytest.mark.asyncio
+async def test_translate_auto():
+    translator = Translator()
+    translation: TranslatedObject = await translator.translate(
+        "Ciao Mondo.", targetlang="en"
+    )
+    assert translation.text == "Hello World.", "Translations are not equal."
+
+
+@pytest.mark.asyncio
+async def test_translate_source():
+    translator = Translator()
+    translation: TranslatedObject = await translator.translate(
+        "Ciao.", sourcelang="it", targetlang="en"
+    )
+
+    assert translation.text == "Hello.", "Translations are not equal."
+
+
+@pytest.mark.asyncio
+async def test_translate_list():
+    translator = Translator()
+    translations: List[TranslatedObject] = await translator.translate(
+        ["Ciao Mondo.", "Come stai?"], targetlang="en"
+    )
+
+    assert [translation.text for translation in translations] == [
+        "Hello World.",
+        "How are you?",
+    ], "Translations are not equal."
+
+
+@pytest.mark.asyncio
+async def test_translate_dict():
+    translator = Translator()
+    translations: Dict[Any, TranslatedObject] = await translator.translate(
+        {1: "Ciao Mondo.", 2: "Come stai?"}, targetlang="en"
+    )
+
+    assert {k: v.text for k, v in translations.items()} == {
+        1: "Hello World.",
+        2: "How are you?",
+    }, "Translations are not equal."