diff --git a/.gitignore b/.gitignore
index 16ef41a..bba3f77 100644
--- a/.gitignore
+++ b/.gitignore
@@ -6,3 +6,8 @@
 /pyMapVBVD-0.5.5-test-data.tar.xz
 /pyMapVBVD-test-data.tar.xz
 /pyMapVBVD-0.5.6.tar.gz
+/pyMapVBVD-0.5.7.tar.gz
+/pyMapVBVD-test-data.tar.zst
+/pymapvbvd-0.6.0.tar.gz
+/pymapvbvd-test-data.tar.zst
+/pymapvbvd-0.6.1.tar.gz
diff --git a/get_test_data.sh b/get_test_data.sh
index a43c1ee..395006a 100755
--- a/get_test_data.sh
+++ b/get_test_data.sh
@@ -11,13 +11,13 @@ Usage: $1 VERSION
 
 Generate a source archive containing the test data files for pyMapVBVD that are
 tracked in git LFS and are not included in the default source archive. The
-result will be named pyMapVBVD-test-data.tar.xz and will be written
+result will be named pymapvbvd-test-data.tar.zst and will be written
 into the current working directory.
 
 The script attempts to produce a reproducible archive to avoid uploading
 near-duplicate archives to the lookaside cache when the test data does not
 change from one version to the next. Accordingly, the top-level directory
-pyMapVBVD-\${VERSION}/ is omitted from the archived paths.
+pymapvbvd-\${VERSION}/ is omitted from the archived paths.
 EOF
 }
 
@@ -45,8 +45,8 @@ GITDIR="$(echo "${FORGEURL}" | sed -r 's@.*/@@')"
 
 #SOURCE0="${FORGEURL}/archive/${VERSION}/pdfminer.six-${VERSION}.tar.gz"
 #TARNAME="$(basename "${SOURCE0}")"
-TARDIR="pyMapVBVD-${VERSION}"
-NEWTAR='pyMapVBVD-test-data.tar.xz'
+TARDIR="pymapvbvd-${VERSION}"
+NEWTAR='pymapvbvd-test-data.tar.zst'
 
 SAVEDIR="${PWD}"
 XDIR="$(mktemp -d)"
@@ -79,7 +79,7 @@ TZ=UTC LC_ALL=C tar \
 		--pax-option='delete=atime,delete=ctime' \
 		--clamp-mtime --mtime='@0' \
 		. |
-	xz -9e > "${XDIR}/${NEWTAR}"
+	zstdmt --ultra -22 > "${XDIR}/${NEWTAR}"
 
 cd "${SAVEDIR}"
 mv -v "${XDIR}/${NEWTAR}" .
diff --git a/python-pymapvbvd.rpmlintrc b/python-pymapvbvd.rpmlintrc
new file mode 100644
index 0000000..bab460e
--- /dev/null
+++ b/python-pymapvbvd.rpmlintrc
@@ -0,0 +1,9 @@
+# Not real spelling errors.
+# - "dat" is from the extension ".dat"
+# - "twix" is a data format
+addFilter(r" spelling-error \('(dat|twix)',")
+# This source cannot be a URL because we must use a script to download its
+# contents from git-lfs.
+addFilter(r" invalid-url Source[0-9]+: pymapvbvd-test-data\.tar\.zst$")
+# Bogus; it is a perfectly fine zstandard file.
+addFilter(r" inconsistent-file-extension pymapvbvd-test-data\.tar\.zst$")
diff --git a/python-pymapvbvd.spec b/python-pymapvbvd.spec
index 98ef714..fbb7b36 100644
--- a/python-pymapvbvd.spec
+++ b/python-pymapvbvd.spec
@@ -1,5 +1,5 @@
 Name:           python-pymapvbvd
-Version:        0.5.6
+Version:        0.6.1
 Release:        %autorelease
 Summary:        Python twix file reader
 
@@ -9,18 +9,20 @@ Summary:        Python twix file reader
 #     also versioneer.py (which is removed in %%prep)
 License:        MIT AND Unlicense
 URL:            https://github.com/wtclarke/pymapvbvd
-Source0:        %{pypi_source pyMapVBVD}
+Source0:        %{pypi_source pymapvbvd}
 # Generated with Source2: ./get_test_data.sh %%{version}
-Source1:        pyMapVBVD-test-data.tar.xz
+Source1:        pymapvbvd-test-data.tar.zst
 Source2:        get_test_data.sh
 
+BuildSystem:            pyproject
+BuildOption(generate_buildrequires): -x tests
+BuildOption(install):   -l mapvbvd
+
 BuildArch:      noarch
 # PyMapVBVD assumes the platform is little-endian
 # https://bugzilla.redhat.com/show_bug.cgi?id=2225518
 ExcludeArch:    s390x
 
-BuildRequires:  python3-devel
-
 %global common_description %{expand:
 Python port of the Matlab mapVBVD tool for reading Siemens raw data 'twix'
 (.dat) files.}
@@ -42,29 +44,22 @@ Summary:        %{summary}
 
 
 %prep
-%autosetup -n pyMapVBVD-%{version} -p1
-%setup -q -T -D -a 1 -c -n pyMapVBVD-%{version}
+%autosetup -n pymapvbvd-%{version} -p1
+%setup -q -T -D -a 1 -c -n pymapvbvd-%{version}
 # We can use the system versioneer to generate _version.py, and can remove the
 # bundled, amaglamated versioneer.py to indicate we aren’t using it.
 rm -v versioneer.py
 
 
-%generate_buildrequires
+%generate_buildrequires -p
 export SETUPTOOLS_SCM_PRETEND_VERSION='%{version}'
-%pyproject_buildrequires -x tests
 
 
-%build
+%build -p
 export SETUPTOOLS_SCM_PRETEND_VERSION='%{version}'
-%pyproject_wheel
 
 
-%install
-%pyproject_install
-%pyproject_save_files -l mapvbvd
-
-
-%check
+%check -a
 %pytest -v
 
 
diff --git a/sources b/sources
index 6457ba0..8624192 100644
--- a/sources
+++ b/sources
@@ -1,2 +1,2 @@
-SHA512 (pyMapVBVD-0.5.6.tar.gz) = 72f22bf9c8fe8d8e4e4bc476312bacb83a434861b1f6ddd6ae0bf4a834da9a489547c5a90c49aeaf54dcd64d7695bb013019b413c828e7404c71ec15eb13699f
-SHA512 (pyMapVBVD-test-data.tar.xz) = 9fa0530f68b02a8ff26fad1c463db217260c2f31a039b96f30a1fa6bb8b044ab8304edfd06abcaf5e9980ed355f29f0339c6e87e8dbddd67ae85457f384d45dd
+SHA512 (pymapvbvd-0.6.1.tar.gz) = b1c12e8f4c261522858feea9c66b5c174b37203a73a54aac8e2bbfb3ab7b1933ba44c9c172aa9cf7a97dba0c4554d99042c042fef9b42f73e912f747ceac1d55
+SHA512 (pymapvbvd-test-data.tar.zst) = 638be0a8ad0e0876b13948d657bcf921e18938e964215c0c61b9deb6eb5f3abee449a0391238e8e60ffef55c4ca3b9c2906f4c4fd3655e23eed3567279e72323