diff --git a/.github/workflows/tests.yaml b/.github/workflows/tests.yaml
index 38f03bf..44a2abe 100644
--- a/.github/workflows/tests.yaml
+++ b/.github/workflows/tests.yaml
@@ -5,7 +5,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest, windows-latest, macos-latest]
-        python_ver: ['3.12']
+        python_ver: ['3.13']
     
     runs-on: ${{ matrix.os }}
     steps:
diff --git a/tox.ini b/tox.ini
index 98551f6..bd0fa9c 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,10 +1,10 @@
 [tox]
 env_list =
-    lint, py{39, 310, 311, 312}
+    lint, py{39, 310, 311, 312, 313}
 
 [gh-actions]
 python =
-    3.12: py312
+    3.13: py313
 
 [testenv]
 description = run unit tests