diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 1e3e1f2..dd9a5e3 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -31,10 +31,6 @@ jobs:
     strategy:
       matrix:
         python-version:
-          - 2.7
-          - 3.6
-          - 3.7
-          - 3.8
           - 3.9
 
     steps:
diff --git a/tox.ini b/tox.ini
index 3f013b6..9f797ff 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,17 +1,14 @@
 [tox]
-envlist = pep8,py27,py36,py37,py38,py39
+envlist = pep8,py39
 
 [gh-actions]
 python =
-    2.7: py27
-    3.6: py36
-    3.7: py37
-    3.8: py38
     3.9: py39
 
 [testenv]
 install_command = pip install {opts} {packages}
 setenv =
+    OBJC_DISABLE_INITIALIZE_FORK_SAFETY=YES
     VIRTUAL_ENV={envdir}
 whitelist_externals = bash
 commands = bash -ex {toxinidir}/functional/run.sh