diff --git a/pyproject.toml b/pyproject.toml
index 162feee40..90206b25e 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -58,7 +58,7 @@ doc = [
     "pickleshare",
     "jupyter",
     "jupyter-sphinx",
-    "open_spiel; sys_platform != 'win32'",
+    "open_spiel; sys_platform != 'win32' and python_version < '3.15'",
     "sphinxcontrib-tikz",
     "jupyter_sphinx",
     "pyyaml",
diff --git a/tests/test_tutorials.py b/tests/test_tutorials.py
index 6d6a4bb9e..756f552cb 100644
--- a/tests/test_tutorials.py
+++ b/tests/test_tutorials.py
@@ -53,6 +53,10 @@ def test_execute_notebook(nb_path):
     if sys.platform == "win32" and "openspiel" in nb_path.name.lower():
         pytest.skip("OpenSpiel notebook requires OpenSpiel, which is not available on Windows")
 
+    # OpenSpiel has no Python 3.15 wheels yet, and building it from source is very slow
+    if sys.version_info >= (3, 15) and "openspiel" in nb_path.name.lower():
+        pytest.skip("OpenSpiel is not installed on Python 3.15 (no wheels available)")
+
     # GAMUT notebook requires Java and gamut.jar; outputs are pre-saved for docs builds
     if "gamut" in nb_path.name.lower():
         pytest.skip("GAMUT notebook requires Java and gamut.jar (see catalog documentation)")