diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 578f847..6aa1276 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -40,11 +40,6 @@ jobs:
 
       - name: Update pip
         run: python3 -m pip install -U pip
-      - name: Avoid compiling OpenCV and NumPy on Python 3.6
-        run: |
-          if python3 --version | grep -q "Python 3.6"; then
-             pip install --prefer-binary -U opencv-python-headless numpy
-          fi
       - name: Install requirements*.txt
         run: |
           for requirements_txt in requirements*.txt; do
diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index 4f3562a..b76b8b6 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -16,7 +16,7 @@ repos:
     -   id: black
 
 -   repo: https://github.com/astral-sh/ruff-pre-commit
-    rev: v0.1.10
+    rev: v0.1.11
     hooks:
     -   args:
         -   --fix
diff --git a/pyproject.toml b/pyproject.toml
index da33b15..ce32d56 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -9,7 +9,7 @@ authors = [
 ]
 description = "The OCR evaluation tool"
 readme = "README.md"
-requires-python = ">=3.6"
+requires-python = ">=3.8"
 keywords = ["qurator", "ocr", "evaluation", "ocr-d"]
 
 dynamic = ["version", "dependencies", "optional-dependencies"]
diff --git a/src/dinglehopper/edit_distance.py b/src/dinglehopper/edit_distance.py
index 9f7d309..af1e047 100644
--- a/src/dinglehopper/edit_distance.py
+++ b/src/dinglehopper/edit_distance.py
@@ -1,4 +1,5 @@
 import unicodedata
+from typing import List
 
 from multimethod import multimethod
 from rapidfuzz.distance import Levenshtein
diff --git a/src/dinglehopper/extracted_text.py b/src/dinglehopper/extracted_text.py
index 49882b7..7ef9d1d 100644
--- a/src/dinglehopper/extracted_text.py
+++ b/src/dinglehopper/extracted_text.py
@@ -4,7 +4,7 @@ import re
 import unicodedata
 from contextlib import suppress
 from itertools import repeat
-from typing import Optional, List
+from typing import List, Optional
 
 import attr
 import numpy as np