diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 56508c0..17e1020 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -38,12 +38,9 @@ jobs:
       # OS images: https://github.com/actions/runner-images
       matrix:
         python-version:
-          - "3.5"
-          - "3.6"
           - "3.7"
           - "3.8"
           - "3.9"
-          - "pypy-3.6"
           - "pypy-3.7"
           - "pypy-3.8"
           - "pypy-3.9"
@@ -59,19 +56,10 @@ jobs:
             architecture: x86
           - platform: macos-latest
             architecture: x86
-          - platform: ubuntu-20.04
-            python-version: "3.4"
-          - platform: macos-latest
-            python-version: "3.4"
-          - platform: macos-latest
-            python-version: "pypy-3.6"
           - platform: macos-latest
             python-version: "pypy-3.7"
           - platform: macos-latest
             python-version: "pypy-3.8"
-          - platform: windows-latest
-            python-version: "pypy-3.6"
-            architecture: x64
     steps:
       - uses: actions/checkout@v3
       - uses: actions/setup-python@v4
diff --git a/tox.ini b/tox.ini
index 68d1cdc..dd7f87b 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,23 +1,18 @@
 [tox]
-; NOTE: jython doesn't play well with pyenv and tox
-envlist = py{27,34,35,36,37,38,39,py}-{linux,macos,windows},ironpython-windows,pypy3-{linux,macos,windows}
+envlist = py{37,38,39,310,311,312,py}-{linux,macos,windows},ironpython-windows,pypy3-{linux,macos,windows}
 skip_missing_interpreters = true
 
 [gh-actions]
 python =
-    2.7: py27
-    3.4: py34
-    3.5: py35
-    3.6: py36
     3.7: py37
     3.8: py38
     3.9: py39
     3.10: py310
     3.11: py311
-    pypy-2.7: pypy
-    pypy-3.6: pypy3
+    3.12: py312
     pypy-3.7: pypy3
     pypy-3.8: pypy3
+    pypy-3.9: pypy3
 
 [gh-actions:env]
 PLATFORM =