diff --git a/.github/workflows/unit_test.yml b/.github/workflows/unit_test.yml
index 8e2e186a..cdd264c3 100644
--- a/.github/workflows/unit_test.yml
+++ b/.github/workflows/unit_test.yml
@@ -21,7 +21,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: ["3.9", "3.12"] #NOTE: min and max Python versions supported by icepyx
+        python-version: ["3.9", "3.13"] #NOTE: min and max Python versions supported by icepyx
 
     steps:
       - uses: "actions/checkout@v4"
diff --git a/pyproject.toml b/pyproject.toml
index fb4907d3..8a0d7f04 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -24,6 +24,7 @@ classifiers=[
   "Programming Language :: Python :: 3.10",
   "Programming Language :: Python :: 3.11",
   "Programming Language :: Python :: 3.12",
+  "Programming Language :: Python :: 3.13",
   "Topic :: Scientific/Engineering",
   "Topic :: Scientific/Engineering :: GIS",
   "Topic :: Software Development :: Libraries",