diff --git a/.github/workflows/testing_multiversion.yml b/.github/workflows/testing_multiversion.yml
index 2c7baf5..2c5f4a1 100644
--- a/.github/workflows/testing_multiversion.yml
+++ b/.github/workflows/testing_multiversion.yml
@@ -19,7 +19,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: ["3.8", "3.9", "3.10", "3.11", "3.12"]
+        python-version: ["3.8", "3.9", "3.10", "3.11", "3.12", "3.13"]
 
     steps:
       # Check out repo and set up Python
diff --git a/pyproject.toml b/pyproject.toml
index 1d6ae8f..14f9893 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -21,13 +21,14 @@ authors = [
 readme = "README.md"
 keywords = ["specs", "phoibos", "arpes"]
 license = { file = "LICENSE" }
-requires-python = ">=3.8,<3.13"
+requires-python = ">=3.8"
 classifiers = [
     "Programming Language :: Python :: 3.8",
     "Programming Language :: Python :: 3.9",
     "Programming Language :: Python :: 3.10",
     "Programming Language :: Python :: 3.11",
     "Programming Language :: Python :: 3.12",
+    "Programming Language :: Python :: 3.13",
     "License :: OSI Approved :: MIT License",
     "Operating System :: OS Independent",
 ]