diff --git a/.github/workflows/pytest.yaml b/.github/workflows/pytest.yaml
index 465c897..f2e4f0f 100644
--- a/.github/workflows/pytest.yaml
+++ b/.github/workflows/pytest.yaml
@@ -8,7 +8,8 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python-version: ["3.8"]
+        python-version: ["3.9", "3.11"]
+      fail-fast: false
 
     steps:
       - uses: actions/checkout@v3
diff --git a/setup.py b/setup.py
index 2158297..856b588 100644
--- a/setup.py
+++ b/setup.py
@@ -30,8 +30,10 @@
         "License :: OSI Approved :: BSD License",
         "Natural Language :: English",
         "Programming Language :: Python :: 3",
-        "Programming Language :: Python :: 3.6",
-        "Programming Language :: Python :: 3.7",
+        "Programming Language :: Python :: 3.8",
+        "Programming Language :: Python :: 3.9",
+        "Programming Language :: Python :: 3.10",
+        "Programming Language :: Python :: 3.11",
     ],
     description="Describe zarr stores from the command line.",
     long_description=readme,
diff --git a/tox.ini b/tox.ini
index 3ccf8a9..1326802 100644
--- a/tox.ini
+++ b/tox.ini
@@ -4,7 +4,7 @@
 # and then run "tox" from this directory.
 
 [tox]
-envlist = py38-xarray{16,19,21,202203,202206}
+envlist = py-xarray{16,19,21,202203,202206,202306,202312}
 
 [testenv]
 deps =
@@ -17,5 +17,7 @@ deps =
     xarray21: xarray>=0.21.0,<0.22.0
     xarray202203: xarray>=2022.03.0,<2022.04.0
     xarray202206: xarray>=2022.06.0,<2022.07.0
+    xarray202306: xarray>=2023.06.0,<2023.07.0
+    xarray202312: xarray>=2023.12.0,<2024.01.0
 commands =
     pytest