diff --git a/pyproject.toml b/pyproject.toml
index d17b936c1..2a4cd65c1 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -5,6 +5,7 @@ requires = [
   "setuptools-scm",
   "wheel",
 ]
+build-backend = "setuptools.build_meta"
 
 [tool.towncrier]
 package = "pytest"
diff --git a/tox.ini b/tox.ini
index f67d06f18..347faf15c 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,5 +1,6 @@
 [tox]
-minversion = 2.0
+isolated_build = True
+minversion = 3.3
 distshare = {homedir}/.tox/distshare
 # make sure to update environment list in travis.yml and appveyor.yml
 envlist =