diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index 0bede579..ed86921c 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -120,22 +120,16 @@ jobs:
     strategy:
       matrix:
         include:
-        - { platform: manylinux1, arch: x86_64, spec: cp36 }
-#        - { platform: manylinux1, arch: x86_64, spec: cp37 }
-#        - { platform: manylinux1, arch: x86_64, spec: cp38 }
+        - { platform: manylinux1, arch: x86_64, spec: cp38 }
 #        - { platform: manylinux1, arch: x86_64, spec: cp39 }
 #        - { platform: manylinux2014, arch: x86_64, spec: cp310 }
 #        - { platform: manylinux2014, arch: x86_64, spec: cp311 }
         - { platform: manylinux2014, arch: x86_64, spec: cp312 }
-#        - { platform: manylinux2014, arch: aarch64, spec: cp36 }
-#        - { platform: manylinux2014, arch: aarch64, spec: cp37 }
 #        - { platform: manylinux2014, arch: aarch64, spec: cp38 }
 #        - { platform: manylinux2014, arch: aarch64, spec: cp39 }
 #        - { platform: manylinux2014, arch: aarch64, spec: cp310 }
 #        - { platform: manylinux2014, arch: aarch64, spec: cp311 }
 #        - { platform: manylinux2014, arch: aarch64, spec: cp312 }
-#        - { platform: manylinux2014, arch: s390x, spec: cp36 }
-#        - { platform: manylinux2014, arch: s390x, spec: cp37 }
 #        - { platform: manylinux2014, arch: s390x, spec: cp38 }
 #        - { platform: manylinux2014, arch: s390x, spec: cp39 }
 #        - { platform: manylinux2014, arch: s390x, spec: cp310 }
@@ -240,10 +234,6 @@ jobs:
     strategy:
       matrix:
         include:
-#        - spec: cp36-macosx_x86_64
-#          cibw_version: cibuildwheel==2.11.1
-#        - spec: cp37-macosx_x86_64
-#          cibw_version: cibuildwheel==2.11.1
 #        - spec: cp38-macosx_x86_64
 #          cibw_version: cibuildwheel==2.11.1
 #        - spec: cp39-macosx_x86_64
@@ -364,17 +354,6 @@ jobs:
     strategy:
       matrix:
         include:
-#        - platform: windows-2019
-#          build_arch: x64
-#          python_arch: x64
-#          spec: 3.6
-#        - platform: windows-2019
-#          build_arch: x64
-#          python_arch: x64
-#          spec: 3.7
-#        - platform: windows-2019
-#          build_arch: x64
-#          python_arch: x64
 #          spec: 3.8
 #        - platform: windows-2019
 #          build_arch: x64
@@ -391,15 +370,7 @@ jobs:
         - platform: windows-2019
           build_arch: x64
           python_arch: x64
-          spec: '3.12.0-rc.1'
-#        - platform: windows-2019
-#          build_arch: win32
-#          python_arch: x86
-#          spec: 3.6
-#        - platform: windows-2019
-#          build_arch: win32
-#          python_arch: x86
-#          spec: 3.7
+          spec: '3.12'
 #        - platform: windows-2019
 #          build_arch: win32
 #          python_arch: x86
@@ -419,7 +390,7 @@ jobs:
         - platform: windows-2019
           build_arch: win32
           python_arch: x86
-          spec: '3.12.0-rc.1'
+          spec: '3.12'
     steps:
     # autocrlf screws up tests under Windows
     - name: Set git to use LF
@@ -463,7 +434,7 @@ jobs:
 
         # run tests on built wheel
         python -m pip install dist/*.whl pytest
-        python -m pytest
+        python -I -m pytest
 
     - name: Upload artifacts
       uses: actions/upload-artifact@v3
diff --git a/.github/workflows/manual_artifact_build.yaml b/.github/workflows/manual_artifact_build.yaml
index 43525273..f1d9e0ab 100644
--- a/.github/workflows/manual_artifact_build.yaml
+++ b/.github/workflows/manual_artifact_build.yaml
@@ -1,12 +1,12 @@
 ---
 # This is the actual artifact build/release workflow. This workflow exists temporarily
 # because GHA doesn't support a dynamic/conditional matrix. Ensure changes are synced with ci.yaml.
-name: Manual Artifact Build
+name: PyYAML CI
 
 on:
-#  push:
-#  pull_request:
-#    types: [opened, synchronize, reopened]
+  push:
+  pull_request:
+    types: [opened, synchronize, reopened]
   workflow_dispatch:
 
 env:
@@ -76,7 +76,6 @@ jobs:
         - { platform: manylinux2014, arch: aarch64 }
         - { platform: manylinux2014, arch: s390x }
         - { platform: musllinux_1_1, arch: x86_64 }
-
     env:
       DOCKER_IMAGE: quay.io/pypa/${{matrix.cfg.platform}}_${{matrix.cfg.arch}}
     steps:
@@ -119,22 +118,16 @@ jobs:
     strategy:
       matrix:
         include:
-        - { platform: manylinux1, arch: x86_64, spec: cp36 }
-        - { platform: manylinux1, arch: x86_64, spec: cp37 }
         - { platform: manylinux1, arch: x86_64, spec: cp38 }
         - { platform: manylinux1, arch: x86_64, spec: cp39 }
         - { platform: manylinux2014, arch: x86_64, spec: cp310 }
         - { platform: manylinux2014, arch: x86_64, spec: cp311 }
         - { platform: manylinux2014, arch: x86_64, spec: cp312 }
-        - { platform: manylinux2014, arch: aarch64, spec: cp36 }
-        - { platform: manylinux2014, arch: aarch64, spec: cp37 }
         - { platform: manylinux2014, arch: aarch64, spec: cp38 }
         - { platform: manylinux2014, arch: aarch64, spec: cp39 }
         - { platform: manylinux2014, arch: aarch64, spec: cp310 }
         - { platform: manylinux2014, arch: aarch64, spec: cp311 }
         - { platform: manylinux2014, arch: aarch64, spec: cp312 }
-        - { platform: manylinux2014, arch: s390x, spec: cp36 }
-        - { platform: manylinux2014, arch: s390x, spec: cp37 }
         - { platform: manylinux2014, arch: s390x, spec: cp38 }
         - { platform: manylinux2014, arch: s390x, spec: cp39 }
         - { platform: manylinux2014, arch: s390x, spec: cp310 }
@@ -239,10 +232,6 @@ jobs:
     strategy:
       matrix:
         include:
-        - spec: cp36-macosx_x86_64
-          cibw_version: cibuildwheel==2.11.1
-        - spec: cp37-macosx_x86_64
-          cibw_version: cibuildwheel==2.11.1
         - spec: cp38-macosx_x86_64
           cibw_version: cibuildwheel==2.11.1
         - spec: cp39-macosx_x86_64
@@ -363,17 +352,6 @@ jobs:
     strategy:
       matrix:
         include:
-        - platform: windows-2019
-          build_arch: x64
-          python_arch: x64
-          spec: 3.6
-        - platform: windows-2019
-          build_arch: x64
-          python_arch: x64
-          spec: 3.7
-        - platform: windows-2019
-          build_arch: x64
-          python_arch: x64
           spec: 3.8
         - platform: windows-2019
           build_arch: x64
@@ -390,15 +368,7 @@ jobs:
         - platform: windows-2019
           build_arch: x64
           python_arch: x64
-          spec: '3.12.0-rc.1'
-        - platform: windows-2019
-          build_arch: win32
-          python_arch: x86
-          spec: 3.6
-        - platform: windows-2019
-          build_arch: win32
-          python_arch: x86
-          spec: 3.7
+          spec: '3.12'
         - platform: windows-2019
           build_arch: win32
           python_arch: x86
@@ -418,7 +388,7 @@ jobs:
         - platform: windows-2019
           build_arch: win32
           python_arch: x86
-          spec: '3.12.0-rc.1'
+          spec: '3.12'
     steps:
     # autocrlf screws up tests under Windows
     - name: Set git to use LF
@@ -462,7 +432,7 @@ jobs:
 
         # run tests on built wheel
         python -m pip install dist/*.whl pytest
-        python -m pytest
+        python -I -m pytest
 
     - name: Upload artifacts
       uses: actions/upload-artifact@v3
diff --git a/.gitignore b/.gitignore
index e531e481..194fb321 100644
--- a/.gitignore
+++ b/.gitignore
@@ -16,4 +16,4 @@ _pycache_/*
 
 # local IDE state
 /.idea/*
-
+/.tox/*
diff --git a/Makefile b/Makefile
index 651e7d34..fc66e0a2 100644
--- a/Makefile
+++ b/Makefile
@@ -24,10 +24,10 @@ installext:
 	${PYTHON} setup.py --with-libyaml install ${PARAMETERS}
 
 test: build
-	PYYAML_FORCE_LIBYAML=0 ${PYTHON} -m pytest
+	PYYAML_FORCE_LIBYAML=0 ${PYTHON} -I -m pytest
 
 testext: buildext
-	PYYAML_FORCE_LIBYAML=1 ${PYTHON} -m pytest
+	PYYAML_FORCE_LIBYAML=1 ${PYTHON} -I -m pytest
 
 testall:
 	${PYTHON} -m pytest
diff --git a/tox.ini b/tox.ini
index 4335fa98..412d7dbc 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,9 +1,9 @@
 [tox]
-envlist = pypy3,py36,py37,py38,py39,py310,py311
+envlist = py38,py39,py310,py311,py312
 
 [testenv]
 deps =
-    Cython
+    pytest
 commands =
-    python setup.py test
-passenv = PYYAML_TEST_GROUP
+    pytest
+