diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index e8aa8fb..04b7714 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -21,10 +21,6 @@ jobs:
         python-version: [3.8, 3.9, "3.10", "3.11", "3.12", "3.13-dev"]
         include:
         # other OS version necessary
-        - os: ubuntu-20.04
-          python-version: 3.6
-        - os: ubuntu-20.04
-          python-version: 3.7
         - os: macos-latest
           python-version: "3.10"
         - os: windows-latest
diff --git a/README.md b/README.md
index 10da475..7b40d78 100644
--- a/README.md
+++ b/README.md
@@ -72,6 +72,9 @@ $ pip install --upgrade courlan # to make sure you have the latest version
 $ pip install git+https://github.com/adbar/courlan.git # latest available code (see build status above)
 ```
 
+The last version to support Python 3.6 and 3.7 is `courlan==1.2.0`.
+
+
 ## Python
 
 Most filters revolve around the `strict` and `language` arguments.
diff --git a/courlan/clean.py b/courlan/clean.py
index a68c5b5..9278d15 100644
--- a/courlan/clean.py
+++ b/courlan/clean.py
@@ -157,8 +157,7 @@ def decode_punycode(string: str) -> str:
 def normalize_part(url_part: str) -> str:
     """Normalize URLs parts (specifically path and fragment) while
     accounting for certain characters."""
-    # "~" for compatibility with Python 3.6
-    return quote(url_part, safe="/%!=:,-~")
+    return quote(url_part, safe="/%!=:,-")
 
 
 def normalize_fragment(fragment: str, language: Optional[str] = None) -> str:
diff --git a/courlan/filters.py b/courlan/filters.py
index 8158481..3182432 100644
--- a/courlan/filters.py
+++ b/courlan/filters.py
@@ -10,7 +10,7 @@
 from typing import Any, Optional, Tuple
 from urllib.parse import urlsplit
 
-from babel import Locale, UnknownLocaleError  # type: ignore
+from babel import Locale, UnknownLocaleError
 
 
 LOGGER = logging.getLogger(__name__)
diff --git a/setup.py b/setup.py
index a987599..c6e5424 100644
--- a/setup.py
+++ b/setup.py
@@ -58,8 +58,7 @@ def get_long_description():
     long_description_content_type="text/markdown",
     classifiers=[
         # As from http://pypi.python.org/pypi?%3Aaction=list_classifiers
-        "Development Status :: 4 - Beta",
-        #'Development Status :: 5 - Production/Stable',
+        "Development Status :: 5 - Production/Stable",
         #'Development Status :: 6 - Mature',
         "Environment :: Console",
         "Intended Audience :: Developers",
@@ -72,8 +71,6 @@ def get_long_description():
         "Operating System :: POSIX :: Linux",
         "Programming Language :: Python",
         "Programming Language :: Python :: 3",
-        "Programming Language :: Python :: 3.6",
-        "Programming Language :: Python :: 3.7",
         "Programming Language :: Python :: 3.8",
         "Programming Language :: Python :: 3.9",
         "Programming Language :: Python :: 3.10",
@@ -108,13 +105,11 @@ def get_long_description():
     },
     # package_data={},
     include_package_data=True,
-    python_requires=">=3.6",
+    python_requires=">=3.8",
     install_requires=[
         "babel >= 2.11.0",
-        "tld == 0.12.6; python_version < '3.7'",
-        "tld >= 0.13; python_version >= '3.7'",
-        "urllib3 >= 1.26, < 2; python_version < '3.7'",
-        "urllib3 >= 1.26, < 3; python_version >= '3.7'",
+        "tld >= 0.13",
+        "urllib3 >= 1.26, < 3",
     ],
     # extras_require=extras,
     entry_points={