diff --git a/asar.spec b/asar.spec
index f6bd1a8..e06ef70 100644
--- a/asar.spec
+++ b/asar.spec
@@ -20,20 +20,19 @@ Name:           asar
 Version:        3.2.0
 Release:        0
 Summary:        Creating atom-shell (electron) app packages
-License:        MIT and X11 and ISC and SUSE-WTFPL-2.0 and Apache-2.0 and BSD-3-Clause
+License:        MIT and ISC
 Group:          Development/Languages/NodeJS
 Url:            https://github.com/electron/asar
 Source0:        https://github.com/electron/asar/archive/refs/tags/v%{version}.tar.gz
 # Created by prepare-vendor.sh
-Source1:        vendor.tar.zst
-
+Source1:        vendor.tar.xz
 
 BuildArch:      noarch
 
 BuildRequires:  fdupes
 BuildRequires:  nodejs-packaging
 BuildRequires:  npm
-BuildRequires:  zstd
+
 %global __requires_exclude ^npm(.*)$
 Provides: nodejs-asar = %{version}
 %description
@@ -46,7 +45,6 @@ having random access support.
 %autosetup -p1 -a 1
 
 %build
-cd node_modules
 npm rebuild --verbose
 
 %install
@@ -78,6 +76,9 @@ find -name '.releaserc*' -type f -print -delete
 
 %fdupes %{buildroot}
 
+#%%check
+#We can't run tests, we don't have mocha available.
+
 %files
 %defattr(-,root,root)
 %doc CHANGELOG.md README.md
diff --git a/prepare_vendor.sh b/prepare_vendor.sh
index 3e91098..cf06e15 100644
--- a/prepare_vendor.sh
+++ b/prepare_vendor.sh
@@ -41,7 +41,7 @@ pushd "$ASAR_PATH" || cleanup_and_exit 1
 
 
 echo ">>>>>> Install npm modules"
-yarn install --pure-lockfile --ignore-scripts --production
+yarn install --pure-lockfile --ignore-engines --ignore-scripts --production
 ret=$?
 if [ $ret -ne 0 ]; then
     echo "ERROR: yarn install failed"
@@ -56,10 +56,7 @@ find node_modules/ -name "*.dylib" -print -delete
 find node_modules/ -name "*.so" -print -delete
 find node_modules/ -name "*.o" -print -delete
 find node_modules/ -name "*.a" -print -delete
-find node_modules/ -name "*.snyk-*.flag" -print -delete
-find node_modules/ -name "builderror.log" -print -delete
-find node_modules/ -name ".deps" -type d -print0 | xargs -0 rm -rvf
-sed -i "/\.deps/d" node_modules/.yarn-integrity
+
 
 
 echo '>>>>>> Remove vendored binaries'
@@ -70,13 +67,12 @@ find . -type f| sponge |\
 
 
 echo ">>>>>> Package vendor files"
-#Use zst, it decompresses faster.
-rm -f "${ASAR_PKGDIR}/vendor.tar.zst"
-ZSTD_CLEVEL=19 ZSTD_NBTHREADS="$(nproc)" tar --zstd -vvcf "${ASAR_PKGDIR}/vendor.tar.zst" node_modules
+rm -f "${ASAR_PKGDIR}/vendor.tar.xz"
+XZ_OPT="-T$(nproc) -e9 -vv" tar -vvJcf "${ASAR_PKGDIR}/vendor.tar.xz" node_modules
 if [ $? -ne 0 ]; then
     cleanup_and_exit 1
 fi
-echo "vendor $(du -sh "${ASAR_PKGDIR}/vendor.tar.zst")"
+echo "vendor $(du -sh "${ASAR_PKGDIR}/vendor.tar.xz")"
 
 
 popd || cleanup_and_exit 1
diff --git a/vendor.tar.xz b/vendor.tar.xz
new file mode 100644
index 0000000..0812515
--- /dev/null
+++ b/vendor.tar.xz
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:7cfd6121e554af57c0b6eba1c5fecd5ad2aee83e145867dd9fc6b540bce1774b
+size 163336
diff --git a/vendor.tar.zst b/vendor.tar.zst
deleted file mode 100644
index 8297f50..0000000
--- a/vendor.tar.zst
+++ /dev/null
@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:5c59350570810f59f59a6ac284046c91ddb45bb5dd9fa6a643c142617370aa97
-size 169541