diff --git a/.github/workflows/python-pypi-test-upload.yml b/.github/workflows/python-pypi-test-upload.yml
index d73998a..ff339da 100644
--- a/.github/workflows/python-pypi-test-upload.yml
+++ b/.github/workflows/python-pypi-test-upload.yml
@@ -18,10 +18,10 @@ jobs:
 
     steps:
     - uses: actions/checkout@v3
-    - name: Set up Python 3.10
+    - name: Set up Python 3.8
       uses: actions/setup-python@v3
       with:
-        python-version: "3.10"
+        python-version: "3.8"
     - name: Install dependencies
       run: |
         python -m pip install --upgrade pip pipenv
diff --git a/Pipfile b/Pipfile
index 7e08209..fd77987 100644
--- a/Pipfile
+++ b/Pipfile
@@ -14,4 +14,4 @@ auditwheel = "*"
 coverage = "*"
 
 [requires]
-python_version = "3.10"
+python_version = "3.8"
diff --git a/Pipfile.lock b/Pipfile.lock
index b6a70ae..0e53ac1 100644
--- a/Pipfile.lock
+++ b/Pipfile.lock
@@ -1,11 +1,11 @@
 {
     "_meta": {
         "hash": {
-            "sha256": "70c04ebd85722a2f7600eb782204874a2d213d53ec0a036dc0c7020c275e1683"
+            "sha256": "d79def82642767e87a1f8c184ec5c4e4eb29ee6c98adcdeeb44a14ae4b323306"
         },
         "pipfile-spec": 6,
         "requires": {
-            "python_version": "3.10"
+            "python_version": "3.8"
         },
         "sources": [
             {
@@ -434,6 +434,14 @@
             "index": "pypi",
             "version": "==4.0.2"
         },
+        "typing-extensions": {
+            "hashes": [
+                "sha256:1511434bb92bf8dd198c12b1cc812e800d4181cfcb867674e0f8279cc93087aa",
+                "sha256:16fa4864408f655d35ec496218b85f79b3437c829e93320c7c9215ccfd92489e"
+            ],
+            "markers": "python_version < '3.9'",
+            "version": "==4.4.0"
+        },
         "urllib3": {
             "hashes": [
                 "sha256:47cc05d99aaa09c9e72ed5809b60e7ba354e64b59c9c173ac3018642d8bb41fc",
diff --git a/makefile b/makefile
index 5661ebc..fbe11a9 100644
--- a/makefile
+++ b/makefile
@@ -15,6 +15,6 @@ all: $(OBJS)
 
 clean:
 
-	rm $(WORK)/**/*.cpython-310-x86_64-linux-gnu.so
+	rm $(WORK)/**/*.so
 	rm $(WORK)/**/*.c
 
diff --git a/setup.py b/setup.py
index 89503ea..87a433a 100644
--- a/setup.py
+++ b/setup.py
@@ -1,9 +1,9 @@
-from setuptools import Extension, setup
-from Cython.Build import cythonize
-import setuptools
-import numpy
 import os
 
+import numpy
+import setuptools
+from Cython.Build import cythonize
+from setuptools import Extension
 
 __name = "yoshi-seals"
 
@@ -55,7 +55,7 @@ setuptools.setup(
         "License :: OSI Approved :: GNU General Public License v2 (GPLv2)",
         "Operating System :: OS Independent"
     ],
-    python_requires='>=3.6',
+    python_requires='>=3.8',
     install_requires=[
         'numpy',
         'pandas',