diff --git a/problog/version.py b/problog/version.py
index 9bb8918c..12cb1f0f 100644
--- a/problog/version.py
+++ b/problog/version.py
@@ -1 +1 @@
-version = '2.2.5'
+version = '2.2.6'
diff --git a/pyproject.toml b/pyproject.toml
new file mode 100644
index 00000000..d7650a48
--- /dev/null
+++ b/pyproject.toml
@@ -0,0 +1,3 @@
+[build-system]
+requires = ["setuptools >= 61.0"]
+build-backend = "setuptools.build_meta"
\ No newline at end of file
diff --git a/setup.py b/setup.py
index d98a87f5..5a02b4a5 100755
--- a/setup.py
+++ b/setup.py
@@ -75,14 +75,17 @@ def run(self):
             "License :: OSI Approved :: Apache Software License",
             "Intended Audience :: Science/Research",
             "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 :: Prolog",
             "Topic :: Scientific/Engineering :: Artificial Intelligence",
         ],
         keywords="prolog probabilistic logic",
         packages=find_packages(),
+        install_requires = ["setuptools"],
         extras_require={"sdd": ["pysdd>=0.2.6"]},
         entry_points={"console_scripts": ["problog=problog.tasks:main"]},
         package_data=package_data,