diff --git a/README.md b/README.md
index 5d8b795..33078cf 100644
--- a/README.md
+++ b/README.md
@@ -25,7 +25,7 @@ pip install playground
 ### From Source
 
 > [!IMPORTANT]
-> Requires Python 3.9 or later.
+> Requires Python 3.10 or later.
 
 1. `pip install -U "jax[cuda12]"`
     * Verify GPU backend: python -c "import jax; print(jax.default_backend())" should print gpu
diff --git a/pyproject.toml b/pyproject.toml
index 7b2c7a2..477ec23 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -9,7 +9,7 @@ readme = "README.md"
 authors = [
     {name = "Google DeepMind", email = "mujoco@deepmind.com"},
 ]
-requires-python = ">=3.9"
+requires-python = ">=3.10"
 dynamic = ["description"]
 classifiers = [
     "Development Status :: 5 - Production/Stable",
@@ -17,7 +17,6 @@ classifiers = [
     "Intended Audience :: Developers",
     "Intended Audience :: Science/Research",
     "License :: OSI Approved :: Apache Software License",
-    "Programming Language :: Python :: 3.9",
     "Programming Language :: Python :: 3.10",
     "Programming Language :: Python :: 3.11",
     "Programming Language :: Python :: 3.12",