diff --git a/.gitignore b/.gitignore
index 9a81b57..39daced 100644
--- a/.gitignore
+++ b/.gitignore
@@ -4,3 +4,4 @@
 /chardet-5.0.0-filtered.tar.xz
 /chardet-5.1.0-filtered.tar.xz
 /chardet-5.2.0-filtered.tar.xz
+/chardet-5.2.0-filtered.tar.zst
diff --git a/get_source b/get_source
index 513d1d3..a574f7e 100755
--- a/get_source
+++ b/get_source
@@ -26,9 +26,23 @@ ARCHIVE="$(find . -mindepth 1 -maxdepth 1 -type f -name '*.tar.gz' -print -quit)
 echo "--> Extracting: $(basename "${ARCHIVE}")" 1>&2
 tar -xzf "${ARCHIVE}"
 echo '--> Removing tests due to licensing issues' 1>&2
-rm -rvf */tests/
-FILTERED="$(basename "${ARCHIVE}" .tar.gz)-filtered.tar.xz"
+TARDIR="$(basename "${ARCHIVE}" '.tar.gz')"
+MTIME="$(stat -c '%Y' "${TARDIR}")"
+rm -rvf "${TARDIR}/tests/"
+# Restore the original mtime even though we modified the base directory by
+# removing the tests.
+touch -d @"${MTIME}" "${TARDIR}"
+FILTERED="$(basename "${ARCHIVE}" .tar.gz)-filtered.tar.zst"
 echo "--> Re-archiving: ${FILTERED}" 1>&2
-tar -c "${FILTERED}" */ | xz -9e > "${FILTERED}"
+# https://www.gnu.org/software/tar/manual/html_section/Reproducibility.html
+TZ=UTC LC_ALL=C tar \
+    --create --verbose \
+    --sort=name \
+    --format=posix \
+    --numeric-owner --owner=0 --group=0 \
+    --mode=go+u,go-w \
+    --pax-option='delete=atime,delete=ctime' \
+    "${TARDIR}/" |
+  zstdmt --ultra -22 > "${FILTERED}"
 mv -v "${FILTERED}" "${OUTDIR}"
 echo 'Done.' 1>&2
diff --git a/python-chardet.rpmlintrc b/python-chardet.rpmlintrc
new file mode 100644
index 0000000..39210e7
--- /dev/null
+++ b/python-chardet.rpmlintrc
@@ -0,0 +1,11 @@
+# Not a real spelling error:
+addFilter(r" spelling-error \('([Pp]rober)s?',")
+# This Source cannot be a URL because we must filter out certain files.
+addFilter(r" invalid-url Source[0-9]+: chardet-.*-filtered\.tar\.zst")
+# Bogus; it is a perfectly fine zstandard file.
+addFilter(r" inconsistent-file-extension chardet-.*-filtered\.tar\.zst$")
+# The -doc subpackage was removed without an equivalent replacement.
+addFilter(r" obsolete-not-provided python-chardet-doc$")
+# Update LGPLv2.1 license text and notices for remote-only FSF
+# https://github.com/chardet/chardet/pull/307
+addFilter(r" incorrect-fsf-address ")
diff --git a/python-chardet.spec b/python-chardet.spec
index dc60893..a851737 100644
--- a/python-chardet.spec
+++ b/python-chardet.spec
@@ -1,9 +1,3 @@
-# Sphinx-generated HTML documentation is not suitable for packaging; see
-# https://bugzilla.redhat.com/show_bug.cgi?id=2006555 for discussion.
-#
-# We can generate PDF documentation as a substitute.
-%bcond doc 1
-
 Name:           python-chardet
 Version:        5.2.0
 Release:        %autorelease
@@ -22,25 +16,16 @@ URL:            https://github.com/chardet/chardet
 #
 #   problematic licensing of /tests?
 #   https://github.com/chardet/chardet/issues/231
-Source0:        chardet-%{version}-filtered.tar.xz
+Source0:        chardet-%{version}-filtered.tar.zst
 Source1:        get_source
 # Hand-written for Fedora in groff_man(7) format based on --help output
 Source2:        chardetect.1
 
+BuildSystem:            pyproject
+BuildOption(install):   -l chardet
+
 BuildArch:      noarch
 
-BuildRequires:  python3-devel
-
-%if %{with doc}
-BuildRequires:  make
-BuildRequires:  python3dist(sphinx)
-BuildRequires:  python3dist(sphinx-rtd-theme)
-BuildRequires:  python3-sphinx-latex
-BuildRequires:  latexmk
-BuildRequires:  tex-xetex-bin
-BuildRequires:  /usr/bin/xindy
-%endif
-
 %global common_description %{expand:
 Chardet: The Universal Character Encoding Detector
 
@@ -68,65 +53,26 @@ disabled.}
 %package -n python3-chardet
 Summary:        %{summary}
 
+# Removed in F41:
+Obsoletes:      python-chardet-doc < 5.2.0-12
+
 %description -n python3-chardet
 %{common_description}
 
 
-%package        doc
-Summary:        Documentation for python-chardet
-
-%description    doc
-%{common_description}
-
-
-%prep
-%autosetup -n chardet-%{version}
-
-# Since pdflatex cannot handle Unicode inputs in general:
-echo "latex_engine = 'xelatex'" >> docs/conf.py
-
-
-%generate_buildrequires
-%pyproject_buildrequires
-
-
-%build
-%pyproject_wheel
-
-%if %{with doc}
-PYTHONPATH="${PWD}" %make_build -C docs latex \
-    SPHINXOPTS='-j%{?_smp_build_ncpus}'
-%make_build -C docs/_build/latex LATEXMKOPTS='-quiet'
-%endif
-
-
-%install
-%pyproject_install
-%pyproject_save_files chardet
+%install -a
 install -t '%{buildroot}%{_mandir}/man1' -D -p -m 0644 '%{SOURCE2}'
 
 
-%check
 # We cannot run the upstream tests because they would require data files with
 # problematic license status.
-%pyproject_check_import
 
 
 %files -n python3-chardet -f %{pyproject_files}
-%if %{without doc}
 %doc README.rst
-%endif
 %{_bindir}/chardetect
 %{_mandir}/man1/chardetect.1*
 
 
-%if %{with doc}
-%files doc
-%license LICENSE
-%doc README.rst
-%doc docs/_build/latex/chardet.pdf
-%endif
-
-
 %changelog
 %autochangelog
diff --git a/sources b/sources
index 44e7115..3fe621b 100644
--- a/sources
+++ b/sources
@@ -1 +1 @@
-SHA512 (chardet-5.2.0-filtered.tar.xz) = 4f865b958503596cdaf690d0cb586c7c477419ca528b4701d93577c34764fcbab2246d79b82fe25a06246c59cedb9344ec332540efb76cc02d49158fb4903974
+SHA512 (chardet-5.2.0-filtered.tar.zst) = 410b2d62c54781f9b848ee78c659d4607bbb7f94f6117d7fa7cd5f82a50dfaf10d6e4c6dfaefa9b9a721b846c167aa12eae029debbaa66b0d830875c8ce5749c