diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index d9f666c..c93594c 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -12,7 +12,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python-version: ["3.7", "3.8", "3.9", "3.10", "3.11"]
+        python-version: ["3.8", "3.9", "3.10", "3.11", "3.12"]
 
     steps:
       - name: Checkout the repository
diff --git a/pyproject.toml b/pyproject.toml
index 6c9e008..9fb35cd 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -6,7 +6,7 @@ build-backend = "hatchling.build"
 name = "reference-counter"
 description = "Reference counter implementation in python"
 readme = "README.md"
-requires-python = ">=3.7"
+requires-python = ">=3.8"
 license = { text = "BSD 3-Clause License" }
 
 classifiers = [
diff --git a/tox.ini b/tox.ini
index dc070ee..8ffb4b5 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,9 +1,9 @@
 [tox]
-envlist=py26,py27,py33,py34
+envlist=py38,py39,py310,py311,312
 
 [testenv]
 changedir = {toxinidir}
-commands = py.test tests
+commands = pytest tests
 pip_pre = True
-deps =
-    -rtest_requirements.txt
+extras =
+    testing