diff --git a/.github/workflows/python_tests.yml b/.github/workflows/python_tests.yml
index d7d04ff..b7c8090 100644
--- a/.github/workflows/python_tests.yml
+++ b/.github/workflows/python_tests.yml
@@ -12,7 +12,7 @@ jobs:
       fail-fast: false
       matrix:
         platform: [ubuntu-latest, macos-latest, windows-latest]
-        python-version: ["3.9", "3.10", "3.11"]  # lspopt failure on "3.12", see PR187
+        python-version: ["3.9", "3.10", "3.11", "3.12"]
 
     runs-on: ${{ matrix.platform }}
 
diff --git a/pyproject.toml b/pyproject.toml
index 358597d..aef6169 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,5 +1,5 @@
 [build-system]
-requires = ["setuptools>=61.0", "wheel"]
+requires = ["setuptools>=70.0", "wheel"]
 build-backend = "setuptools.build_meta"
 
 [project]