diff --git a/.circleci/config.yml b/.circleci/config.yml
index 1e82e034..64fb5840 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -119,16 +119,10 @@ jobs:
   docs:
     <<: *docs
     docker:
-      - image: cimg/python:3.9
+      - image: cimg/python:3.10
         environment:
           TOXENV: docs
 
-  py38-core:
-    <<: *common
-    docker:
-      - image: cimg/python:3.8
-        environment:
-          TOXENV: py38-core
   py39-core:
     <<: *common
     docker:
@@ -153,13 +147,13 @@ jobs:
       - image: cimg/python:3.12
         environment:
           TOXENV: py312-core
-
-  py38-lint:
+  py313-core:
     <<: *common
     docker:
-      - image: cimg/python:3.8
+      - image: cimg/python:3.13
         environment:
-          TOXENV: py38-lint
+          TOXENV: py313-core
+
   py39-lint:
     <<: *common
     docker:
@@ -184,13 +178,13 @@ jobs:
       - image: cimg/python:3.12
         environment:
           TOXENV: py312-lint
-
-  py38-wheel:
+  py313-lint:
     <<: *common
     docker:
-      - image: cimg/python:3.8
+      - image: cimg/python:3.13
         environment:
-          TOXENV: py38-wheel
+          TOXENV: py313-lint
+
   py39-wheel:
     <<: *common
     docker:
@@ -215,6 +209,12 @@ jobs:
       - image: cimg/python:3.12
         environment:
           TOXENV: py312-wheel
+  py313-wheel:
+    <<: *common
+    docker:
+      - image: cimg/python:3.13
+        environment:
+          TOXENV: py313-wheel
 
   py311-windows-wheel:
     <<: *windows-wheel-setup
@@ -242,25 +242,39 @@ jobs:
       - <<: *run-tox-step
       - <<: *save-cache-step
 
+  py313-windows-wheel:
+    <<: *windows-wheel-setup
+    steps:
+      - checkout
+      - <<: *restore-cache-step
+      - <<: *install-pyenv-step
+      - run:
+          name: set minor version
+          command: echo "export MINOR_VERSION='3.13'" >> $BASH_ENV
+      - <<: *install-latest-python-step
+      - <<: *run-tox-step
+      - <<: *save-cache-step
+
 define: &all_jobs
   - docs
-  - py38-core
   - py39-core
   - py310-core
   - py311-core
   - py312-core
-  - py38-lint
+  - py313-core
   - py39-lint
   - py310-lint
   - py311-lint
   - py312-lint
-  - py38-wheel
+  - py313-lint
   - py39-wheel
   - py310-wheel
   - py311-wheel
   - py312-wheel
+  - py313-wheel
   - py311-windows-wheel
   - py312-windows-wheel
+  - py313-windows-wheel
 
 workflows:
   version: 2
diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index 52554889..27e397a7 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -11,7 +11,7 @@ repos:
     rev: v3.15.0
     hooks:
     -   id: pyupgrade
-        args: [--py38-plus]
+        args: [--py39-plus]
 -   repo: https://github.com/psf/black
     rev: 23.9.1
     hooks:
diff --git a/.readthedocs.yaml b/.readthedocs.yaml
index acf57208..e72927c2 100644
--- a/.readthedocs.yaml
+++ b/.readthedocs.yaml
@@ -3,7 +3,7 @@ version: 2
 build:
   os: ubuntu-22.04
   tools:
-    python: "3.9"
+    python: "3.10"
 
 sphinx:
   configuration: docs/conf.py
diff --git a/LICENSE b/LICENSE
index b76b24d4..f62c80ac 100644
--- a/LICENSE
+++ b/LICENSE
@@ -1,6 +1,6 @@
 The MIT License (MIT)
 
-Copyright (c) 2019-2023 The Ethereum Foundation
+Copyright (c) 2019-2024 The Ethereum Foundation
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
diff --git a/setup.py b/setup.py
index 9df5e76c..8d4afe03 100644
--- a/setup.py
+++ b/setup.py
@@ -49,7 +49,7 @@ setup(
     install_requires=[
         "eth-utils>=2",
     ],
-    python_requires=">=3.8, <4",
+    python_requires=">=3.9, <4",
     extras_require=extras_require,
     py_modules=["<MODULE_NAME>"],
     license="MIT",
@@ -63,10 +63,10 @@ setup(
         "License :: OSI Approved :: MIT License",
         "Natural Language :: English",
         "Programming Language :: Python :: 3",
-        "Programming Language :: Python :: 3.8",
         "Programming Language :: Python :: 3.9",
         "Programming Language :: Python :: 3.10",
         "Programming Language :: Python :: 3.11",
         "Programming Language :: Python :: 3.12",
+        "Programming Language :: Python :: 3.13",
     ],
 )
diff --git a/tox.ini b/tox.ini
index f7c0dfee..a7520269 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,8 +1,8 @@
 [tox]
 envlist=
-    py{38,39,310,311,312}-core
-    py{38,39,310,311,312}-lint
-    py{38,39,310,311,312}-wheel
+    py{39,310,311,312,313}-core
+    py{39,310,311,312,313}-lint
+    py{39,310,311,312,313}-wheel
     windows-wheel
     docs
 
@@ -23,23 +23,23 @@ commands=
 basepython=
     docs: python
     windows-wheel: python
-    py38: python3.8
     py39: python3.9
     py310: python3.10
     py311: python3.11
     py312: python3.12
+    py313: python3.13
 extras=
     test
     docs
 allowlist_externals=make,pre-commit
 
-[testenv:py{38,39,310,311,312}-lint]
+[testenv:py{39,310,311,313}-lint]
 deps=pre-commit
 commands=
     pre-commit install
     pre-commit run --all-files --show-diff-on-failure
 
-[testenv:py{38,39,310,311,312}-wheel]
+[testenv:py{39,310,311,312,313}-wheel]
 deps=
     wheel
     build[virtualenv]