diff --git a/system/extra/bzip2/ympbuild b/system/extra/bzip2/ympbuild
index fc648eb5..29fc0da9 100644
--- a/system/extra/bzip2/ympbuild
+++ b/system/extra/bzip2/ympbuild
@@ -6,7 +6,7 @@ url='https://sourceware.org/bzip2'
 description='lzma compression utilities and library'
 email='kurth4cker@tutanota.com'
 maintainer='kurth4cker'
-source=('https://sourceware.org/pub/bzip2/bzip2-1.0.8.tar.gz')
+source=("https://sourceware.org/pub/bzip2/bzip2-${version}.tar.gz")
 md5sums=('67e051268d0c475ea773822f7500d0e5')
 group=(system.extra)
 
diff --git a/system/extra/file/ympbuild b/system/extra/file/ympbuild
index e1aeb721..a1bb9054 100644
--- a/system/extra/file/ympbuild
+++ b/system/extra/file/ympbuild
@@ -6,8 +6,8 @@ url='https://www.darwinsys.com/file/'
 description="Identify a file's format by scanning binary data for patterns"
 email='kurth4cker@tutanota.com'
 maintainer='kurth4cker'
-source=(http://ftp.astron.com/pub/file/file-5.43.tar.gz)
-md5sums=(8effd70da368210a6c6eece037f978eb)
+source=("http://ftp.astron.com/pub/file/file-${version}.tar.gz")
+md5sums=('8effd70da368210a6c6eece037f978eb')
 group=(system.extra)
 uses=(bzip2 lzma zlib seccomp)
 zlib_depends=(zlib)
diff --git a/system/extra/libseccomp/ympbuild b/system/extra/libseccomp/ympbuild
new file mode 100644
index 00000000..d972f2fb
--- /dev/null
+++ b/system/extra/libseccomp/ympbuild
@@ -0,0 +1,30 @@
+#!/usr/bin/env bash
+name=libseccomp
+version=2.5.4
+release=1
+homepage='https://github.com/seccomp/libseccomp'
+description='high level interface to linux seccomp filter'
+maintainer='kurth4cker'
+email='kurth4cker@tutanota.com'
+license=('LGPL-2.1')
+source=("https://github.com/seccomp/libseccomp/releases/download/v${version}/libseccomp-${version}.tar.gz")
+md5sums=('74008bb33234e0c2a0d998e7bee5c625')
+group=(system.extra)
+
+cd $name-$version
+
+setup(){
+    ./configure --prefix=/usr \
+	--libdir=/usr/lib64 \
+	--enable-static \
+	--enable-shared \
+	--disable-silent-rules \
+	--disable-python
+	--disable-code-coverage
+}
+build(){
+    make -j$(nproc)
+}
+package(){
+    make install -j$(nproc)
+}
diff --git a/system/extra/xz-utils/ympbuild b/system/extra/xz-utils/ympbuild
new file mode 100644
index 00000000..c05d7e59
--- /dev/null
+++ b/system/extra/xz-utils/ympbuild
@@ -0,0 +1,30 @@
+#!/usr/bin/env bash
+name=xz-utils
+version=5.2.7
+release=1
+homepage='https://tukaani.org/xz/'
+description='lzma compression utilities'
+maintainer='kurth4cker'
+email='kurth4cker@tutanota.com'
+license=('GPLv2+')
+source=("https://tukaani.org/xz/xz-${version}.tar.gz")
+md5sums=('66f82a9fa24623f5ea8a9ee6b4f808e2')
+group=(system.extra)
+uses=(doc nls)
+
+cd xz-$version
+
+setup(){
+    ./configure --prefix=/usr \
+	--libdir=/usr/lib64 \
+	--enable-static \
+	--enable-shared \
+	$(use_opt doc --enable-doc --disable-doc) \
+	$(use_opt nls --enable-nls --disable-nls)
+}
+build(){
+    make -j$(nproc)
+}
+package(){
+    make install -j$(nproc)
+}