diff --git a/setup.cfg b/setup.cfg
index fabc08c..be0a13c 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -22,8 +22,8 @@ url = https://github.com/decentral1se/calibrestekje
 project_urls =
   Source Code = https://github.com/decentral1se/calibrestekje
   Documentation = https://calibrestekje.readthedocs.io/
-  Maintainer Support = decentral1se
-description = Calibre database bindings for library prototyping.
+  Maintainer Support = https://liberapay.com/decentral1se/
+description = Library prototyping based on Calibre.
 long_description = file: README.rst
 license = GPLv3
 license_file = LICENSE
@@ -45,7 +45,6 @@ packages = find:
 zip_safe = False
 install_requires =
   sqlalchemy >= 1.3.13, <= 1.4
-  attrs >= 19.1.0, < 20.0
 
 [options.packages.find]
 where = .
@@ -60,6 +59,5 @@ warning-is-error = True
 docs =
   sphinx
   sphinx_rtd_theme
-  sphinx-autodoc-typehints >= 1.6.0, < 2.0
 changelog =
   towncrier <= 19.2.0, < 20.0