diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 9e35099..2e3b48f 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -14,8 +14,8 @@ jobs:
       fail-fast: false
       matrix:
         python-version:
-        - '3.8'
-        - '3.12'
+        - '3.9'
+        - '3.13'
     name: Check Python ${{ matrix.python-version }}
     steps:
     - uses: actions/checkout@v4
diff --git a/pyproject.toml b/pyproject.toml
index 6c85fa3..4e63be8 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -39,7 +39,7 @@ lint.extend-ignore = [
   "E501",   # Line too long
   "PT011",  # Too broad of a match
 ]
-target-version = "py37"
+target-version = "py39"
 lint.typing-modules = ["mypackage._compat.typing"]
 src = ["src"]
 lint.unfixable = [
diff --git a/setup.cfg b/setup.cfg
index c5f2699..1670268 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -17,10 +17,11 @@ classifiers =
     Natural Language :: English
     Programming Language :: Python :: 3
     Programming Language :: Python :: 3 :: Only
-    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
     Programming Language :: Python :: Implementation :: CPython
     Typing :: Typed
 keywords =
@@ -33,8 +34,7 @@ packages = find:
 install_requires =
     pyyaml
     requests
-    importlib-resources>=1.3;python_version<"3.9"
-python_requires = >=3.8
+python_requires = >=3.9
 package_dir =
     =src
 zip_safe = True
@@ -49,7 +49,7 @@ console_scripts =
 
 [options.extras_require]
 test =
-    pytest>=4.0.0
+    pytest>=6.0.0
     pytest-cov
 
 [tool:pytest]
@@ -58,7 +58,7 @@ norecursedirs = src
 
 [mypy]
 files = src
-python_version = 3.7
+python_version = 3.9
 warn_unused_configs = True
 disallow_any_generics = True
 disallow_subclassing_any = True