diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index a86c3bd0d..3848dad61 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -9,7 +9,7 @@ jobs:
       max-parallel: 4
       matrix:
         os: [ubuntu-latest, macOS-latest, windows-latest]
-        python-version: ["3.11", "3.12", "3.13", "3.14"]
+        python-version: ["3.13", "3.14", "3.15"]
 
     steps:
       - uses: actions/checkout@v2
diff --git a/tox.ini b/tox.ini
index ab46d7c7d..0e0632961 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,13 +1,12 @@
 [tox]
 isolated_build = True
-envlist = py311, py312, py313, py314
+envlist = py313, py314, py315
 
 [gh-actions]
 python =
-    3.11: py311
-    3.12: py312
     3.13: py313
     3.14: py314
+    3.15: py315
 
 [flake8]
 per-file-ignores =
@@ -39,4 +38,4 @@ commands =
     python run_mypy.py
     python run_strategy_indexer.py
     python -m pytest --cov-report term-missing --cov=axelrod --cov-fail-under=100 . --doctest-glob="*.md" --doctest-glob="*.rst"
-    
\ No newline at end of file
+