diff --git a/Makefile b/Makefile
index 7390fb0e..2bec84d9 100644
--- a/Makefile
+++ b/Makefile
@@ -24,7 +24,7 @@ lint: tox
 .PHONY: tests
 tests: tox
 	# see tox.ini for environment variable settings
-	$(PYTHON) -m tox -e pylint,coverage,py36,py38,py39,py310
+	$(PYTHON) -m tox -e pylint,coverage,py36,py38,py39,py310,py311
 
 .PHONY: unittest
 unittest:
diff --git a/tox.ini b/tox.ini
index 8ade9859..df1e4267 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,6 +1,6 @@
 [tox]
 minversion = 3.2.0
-envlist = pylint,coverage,py36,py38,py39,py310
+envlist = pylint,coverage,py36,py38,py39,py310,py311
 ignore_basepython_conflict = true
 
 [testenv]