diff --git a/.github/workflows/fmu-config.yml b/.github/workflows/fmu-config.yml
index f9738a8..13efd50 100644
--- a/.github/workflows/fmu-config.yml
+++ b/.github/workflows/fmu-config.yml
@@ -19,7 +19,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python-version: ["3.8", "3.9", "3.10", "3.11", "3.12"]
+        python-version: ["3.9", "3.10", "3.11", "3.12"]
 
     steps:
       - name: Checkout commit locally
@@ -64,7 +64,7 @@ jobs:
         run: sphinx-build -b html docs build/docs/html
 
       - name: Update GitHub pages
-        if: github.repository_owner == 'equinor' && github.ref == 'refs/heads/main' && matrix.python-version == '3.8'
+        if: github.repository_owner == 'equinor' && github.ref == 'refs/heads/main' && matrix.python-version == '3.11'
         run: |
           cp -R ./build/docs/html ../html
 
diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index 813629b..e9d1d1d 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -57,7 +57,7 @@ It is very important to be complient to code standards. fmu-config uses
 - Start with documentation and tests. Think and communicate first!
 - Docstrings shall start and end with """ and use Google style.
 - Use pytest as testing engine
-- Code shall be be Python 3.8+ compliant
+- Code shall be be Python 3.9+ compliant
 
 
 ### Linting
diff --git a/README.md b/README.md
index 518c1f7..73d60d7 100644
--- a/README.md
+++ b/README.md
@@ -1,7 +1,7 @@
 # fmu-config
 
 ![fmu-config](https://github.com/equinor/fmu-config/workflows/fmu-config/badge.svg)
-![Python Version](https://img.shields.io/badge/python-3.8%20|%203.9%20|%203.10%20|%203.11%20|%203.12-blue.svg)
+![Python Version](https://img.shields.io/badge/python-3.9%20|%203.10%20|%203.11%20|%203.12-blue.svg)
 [![License: LGPL v3](https://img.shields.io/github/license/equinor/fmu-tools)](https://www.gnu.org/licenses/lgpl-3.0)
 [![Ruff](https://img.shields.io/endpoint?url=https://raw.githubusercontent.com/astral-sh/ruff/main/assets/badge/v2.json)](https://github.com/astral-sh/ruff)
 [![PyPI](https://img.shields.io/pypi/v/fmu-config.svg)](https://pypi.org/project/fmu-config/)
diff --git a/pyproject.toml b/pyproject.toml
index 377be48..24a9e56 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -12,7 +12,7 @@ write_to = "src/fmu/config/version.py"
 name = "fmu-config"
 description = "Library for various config scripts in FMU scopes"
 readme = "README.md"
-requires-python = ">=3.8"
+requires-python = ">=3.9"
 license = { file = "LICENSE" }
 authors = [
     { name = "Equinor", email = "jriv@equinor.com" },
@@ -23,7 +23,6 @@ classifiers = [
     "Intended Audience :: Developers",
     "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",
@@ -61,7 +60,7 @@ disallow_untyped_defs = true
 exclude = "^((tests|docs|examples|build|tools)/|conftest.py?)"
 extra_checks = true
 ignore_missing_imports = true
-python_version = 3.8
+python_version = 3.11
 strict_equality = true
 warn_redundant_casts = true
 warn_unused_configs = true
@@ -95,19 +94,21 @@ ignore = [
     "C901",
 ]
 select = [
-    "B",
-    "C",
-    "E",
-    "F",
-    "I",
-    "PIE",
-    "Q",
-    "RET",
-    "RSE",
-    "SIM",
-    "W",
-    "TCH",
-    "TID",
+    "B",  # flake-8-bugbear
+    "C",  # pylint-convention
+    "E",  # pycodestyle-error
+    "F",  # pyflakes
+    "I",  # isort
+    "NPY",  # numpy
+    "PIE",  # flake8-pie
+    "Q",  # flake8-quotes
+    "RET",  # flake8-return
+    "RSE",  # flake8-raise
+    "SIM",  # flake8-simplify
+    "TCH",  # flake8-type-checking
+    "TID",  # flake8-tidy-imports
+    # "UP",  # pyupgrade
+    "W",  # pylint-warnings
 ]
 
 [tool.ruff.lint.isort]