diff --git a/python/tinycss2/tinycss2.SlackBuild b/python/tinycss2/tinycss2.SlackBuild
index 1d0d4fab9b..defe1fed00 100644
--- a/python/tinycss2/tinycss2.SlackBuild
+++ b/python/tinycss2/tinycss2.SlackBuild
@@ -2,7 +2,7 @@
 
 # Slackware build script for tinycss2
 
-# Copyright 2021 Dimitris Zlatanidis Orestiada, Greece
+# Copyright 2021-2024 Dimitris Zlatanidis Orestiada, Greece
 # All rights reserved.
 #
 # Redistribution and use of this script, with or without modification, is
@@ -25,8 +25,8 @@
 cd $(dirname $0) ; CWD=$(pwd)
 
 PRGNAM=tinycss2
-VERSION=${VERSION:-1.1.0}
-BUILD=${BUILD:-2}
+VERSION=${VERSION:-1.2.1}
+BUILD=${BUILD:-1}
 TAG=${TAG:-_SBo}
 PKGTYPE=${PKGTYPE:-tgz}
 
@@ -79,7 +79,8 @@ find -L . \
  \( -perm 666 -o -perm 664 -o -perm 640 -o -perm 600 -o -perm 444 \
   -o -perm 440 -o -perm 400 \) -exec chmod 644 {} \;
 
-python3 setup.py install --root=$PKG
+python3 -m build --wheel --no-isolation
+python3 -m installer --destdir "$PKG" dist/*.whl
 
 find $PKG -print0 | xargs -0 file | grep -e "executable" -e "shared object" | grep ELF \
   | cut -f 1 -d : | xargs strip --strip-unneeded 2> /dev/null || true
diff --git a/python/tinycss2/tinycss2.info b/python/tinycss2/tinycss2.info
index 8e880b2077..eed97b12a1 100644
--- a/python/tinycss2/tinycss2.info
+++ b/python/tinycss2/tinycss2.info
@@ -1,10 +1,10 @@
 PRGNAM="tinycss2"
-VERSION="1.1.0"
+VERSION="1.2.1"
 HOMEPAGE="https://www.courtbouillon.org/tinycss2"
-DOWNLOAD="https://files.pythonhosted.org/packages/ce/d3/ece7a98d5826bd134e269a3a3030153d30482194fca71d95a3041812aab8/tinycss2-1.1.0.tar.gz"
-MD5SUM="7caf513c4e87fc2449dcfbf407a8416f"
+DOWNLOAD="https://files.pythonhosted.org/packages/75/be/24179dfaa1d742c9365cbd0e3f0edc5d3aa3abad415a2327c5a6ff8ca077/tinycss2-1.2.1.tar.gz"
+MD5SUM="e8a06102e7f42ca791463f11ce7b814d"
 DOWNLOAD_x86_64=""
 MD5SUM_x86_64=""
-REQUIRES="python3-webencodings"
+REQUIRES="python3-build python3-webencodings"
 MAINTAINER="Dimitris Zlatanidis"
-EMAIL="d.zlatanidis@gmail.com"
+EMAIL="dslackw@gmail.com"