diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index bd13705..70813d7 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -8,7 +8,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: [ '3.9', '3.10', '3.11']
+        python-version: [ '3.9', '3.10', '3.11', '3.12']
         os: [ macos-latest, windows-2019, ubuntu-latest ]
 
     steps:
diff --git a/pyproject.toml b/pyproject.toml
index d19900e..e50db1b 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -30,6 +30,7 @@ classifiers = [
     "Programming Language :: Python :: 3.9",
     "Programming Language :: Python :: 3.10",
     "Programming Language :: Python :: 3.11",
+    "Programming Language :: Python :: 3.12",
     "Topic :: Scientific/Engineering",
     "Topic :: Scientific/Engineering :: Physics",
 ]
@@ -50,7 +51,7 @@ dependencies = [
     "tqdm<4.66.0,>=4.62.3",
     "xarray==2023.9.0",
 ]
-requires-python = ">=3.9,<3.12"
+requires-python = ">=3.9,<=3.12"
 
 [project.optional-dependencies]
 dev = ["black", "pip-tools"]