diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index e306aab..3e09713 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -14,8 +14,8 @@ jobs:
       id-token: write  # mandatory for trusted publishing
 
     steps:
-    - uses: actions/checkout@v3
-    - uses: actions/setup-python@v4
+    - uses: actions/checkout@v4
+    - uses: actions/setup-python@v5
       with:
         python-version: '3.10'
 
diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index 6d87642..fa78d3a 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -13,11 +13,11 @@ jobs:
 
     strategy:
       matrix:
-        python-version: ['3.8', '3.9', '3.10', '3.11', '3.12']
+        python-version: ['3.10', '3.11', '3.12', '3.13']
 
     steps:
-    - uses: actions/checkout@v3
-    - uses: actions/setup-python@v4
+    - uses: actions/checkout@v4
+    - uses: actions/setup-python@v5
       with:
         python-version: ${{ matrix.python-version }}
 
@@ -26,7 +26,7 @@ jobs:
         git config --global user.name tester
         git config --global user.email tester@example.com
     - run: tox -e py
-    - uses: codecov/codecov-action@v3
+    - uses: codecov/codecov-action@v4
       with:
         files: .tox/test-reports/coverage.xml
 
@@ -37,11 +37,11 @@ jobs:
 
     strategy:
       matrix:
-        python-version: ['3.6', '3.7']
+        python-version: ['3.7', '3.8', '3.9']
 
     steps:
-    - uses: actions/checkout@v3
-    - uses: actions/setup-python@v4
+    - uses: actions/checkout@v4
+    - uses: actions/setup-python@v5
       with:
         python-version: ${{ matrix.python-version }}
 
@@ -50,7 +50,7 @@ jobs:
         git config --global user.name tester
         git config --global user.email tester@example.com
     - run: tox -e py
-    - uses: codecov/codecov-action@v3
+    - uses: codecov/codecov-action@v4
       with:
         files: .tox/test-reports/coverage.xml
 
@@ -59,10 +59,10 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-    - uses: actions/checkout@v3
-    - uses: actions/setup-python@v4
+    - uses: actions/checkout@v4
+    - uses: actions/setup-python@v5
       with:
-        python-version: '3.11'
+        python-version: '3.13'
 
     - run: pip install -U pip tox
     - run: tox -e docs,style,security
diff --git a/HISTORY.rst b/HISTORY.rst
index ae53710..3a4b3db 100644
--- a/HISTORY.rst
+++ b/HISTORY.rst
@@ -2,6 +2,14 @@
 Release notes
 =============
 
+3.7.0 (2025-03-20)
+------------------
+
+* Adapted ``CheckCommand`` to setuptools v77.0.3
+
+* Dropped support for Python 3.6
+
+
 3.6.0 (2023-12-04)
 ------------------
 
diff --git a/pyproject.toml b/pyproject.toml
new file mode 100644
index 0000000..fed528d
--- /dev/null
+++ b/pyproject.toml
@@ -0,0 +1,3 @@
+[build-system]
+requires = ["setuptools"]
+build-backend = "setuptools.build_meta"
diff --git a/setup.py b/setup.py
index 0cad519..d12ae7c 100644
--- a/setup.py
+++ b/setup.py
@@ -61,7 +61,7 @@ def complete_args(args):
         name="setupmeta",
         entry_points=ENTRY_POINTS,
         packages=["setupmeta"],
-        python_requires=">=3.6",
+        python_requires=">=3.7",
         zip_safe=True,
         classifiers=[
             "Development Status :: 5 - Production/Stable",
@@ -71,12 +71,13 @@ def complete_args(args):
             "Operating System :: Unix",
             "Programming Language :: Python",
             "Programming Language :: Python :: 3",
-            "Programming Language :: Python :: 3.6",
             "Programming Language :: Python :: 3.7",
             "Programming Language :: Python :: 3.8",
             "Programming Language :: Python :: 3.9",
             "Programming Language :: Python :: 3.10",
             "Programming Language :: Python :: 3.11",
+            "Programming Language :: Python :: 3.12",
+            "Programming Language :: Python :: 3.13",
             "Programming Language :: Python :: Implementation :: CPython",
             "Programming Language :: Python :: Implementation :: PyPy",
             "Topic :: Software Development :: Build Tools",
diff --git a/setupmeta/__init__.py b/setupmeta/__init__.py
index 1e2f553..80f26ba 100644
--- a/setupmeta/__init__.py
+++ b/setupmeta/__init__.py
@@ -783,7 +783,7 @@ def __exit__(self, *args):
 def meta_command_init(self, dist, **kwargs):
     """Custom __init__ injected to commands decorated with @MetaCommand"""
     self.setupmeta = getattr(dist, "_setupmeta", None)
-    setuptools.Command.__init__(self, dist, **kwargs)
+    super(self.__class__, self).__init__(dist, **kwargs)
 
 
 class UsageError(Exception):
diff --git a/tox.ini b/tox.ini
index beee963..11d9a98 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,11 +1,11 @@
 [tox]
-envlist = py{36,37,38,39,310,311}, coverage, docs, style, security
-skip_missing_interpreters = true
-
+envlist = py{37,38,39,310,311,312,313}, coverage, docs, style, security
+# Pointing to pypi.org mirror explicitly to avoid using internal mirrors in place at some companies
+# This is usually not necessary, but can be useful in some cases (eg: latest setuptools not on internal mirror)
+indexserver =
+    default = https://pypi.org/simple
 
 [testenv]
-passenv = CI
-          GITHUB_*
 setenv = COVERAGE_FILE={toxworkdir}/.coverage.{envname}
 usedevelop = True
 deps = -rtests/requirements.txt