diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index f2924258..747e4b27 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -14,7 +14,7 @@ For more details, see the rest of this document.
 
 ## Development environment
 
-GeoUtils currently supports only Python versions of 3.8 and higher, see `environment.yml` for detailed dependencies.
+GeoUtils currently supports only Python versions of 3.9 and higher, see `environment.yml` for detailed dependencies.
 
 ### Setup
 
diff --git a/dev-environment.yml b/dev-environment.yml
index 625b435a..5f3078e3 100644
--- a/dev-environment.yml
+++ b/dev-environment.yml
@@ -2,7 +2,7 @@ name: geoutils-dev
 channels:
   - conda-forge
 dependencies:
-  - python>=3.8
+  - python>=3.9
   - geopandas>=0.12.0
   - matplotlib
   - pyproj
diff --git a/environment.yml b/environment.yml
index 218f0adf..c53d6793 100644
--- a/environment.yml
+++ b/environment.yml
@@ -2,7 +2,7 @@ name: geoutils
 channels:
   - conda-forge
 dependencies:
-  - python>=3.8
+  - python>=3.9
   - geopandas>=0.12.0
   - matplotlib
   - pyproj
diff --git a/setup.cfg b/setup.cfg
index a2083abf..f8a81aec 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -20,9 +20,9 @@ classifiers =
     Topic :: Scientific/Engineering :: Image Processing
     Topic :: Scientific/Engineering :: Information Analysis
     Programming Language :: Python
-    Programming Language :: Python :: 3.8
     Programming Language :: Python :: 3.9
     Programming Language :: Python :: 3.10
+    Programming Language :: Python :: 3.11
     Programming Language :: Python :: 3
     Topic :: Software Development :: Libraries :: Python Modules
     Typing :: Typed
@@ -34,7 +34,7 @@ packages = find:
 scripts = bin/geoviewer.py
 zip_safe = False # https://mypy.readthedocs.io/en/stable/installed_packages.html
 include_package_data = True
-python_requires = >=3.8
+python_requires = >=3.9
 # Avoid pinning dependencies in requirements.txt (which we don't do anyways, and we rely mostly on Conda)
 # (https://caremad.io/posts/2013/07/setup-vs-requirement/, https://github.com/pypa/setuptools/issues/1951)
 install_requires = file: requirements.txt