diff --git a/Libraries/libtasn1/build b/Libraries/libtasn1/build
new file mode 100755
index 0000000..343ae5e
--- /dev/null
+++ b/Libraries/libtasn1/build
@@ -0,0 +1,13 @@
+#!/usr/bin/env modbuild
+
+pbuild::set_download_url "https://ftp.gnu.org/gnu/$P/$P-$V.tar.gz"
+
+# use system gcc to compile
+declare -rx CC=gcc
+
+pbuild::add_to_group 'Libraries'
+
+pbuild::add_configure_args "--disable-shared"
+pbuild::add_configure_args "CFLAGS=-fPIC"
+
+pbuild::make_all
diff --git a/Libraries/libtasn1/files/variants b/Libraries/libtasn1/files/variants
new file mode 100644
index 0000000..0d4afdd
--- /dev/null
+++ b/Libraries/libtasn1/files/variants
@@ -0,0 +1 @@
+libtasn1/4.13	unstable
diff --git a/Libraries/libtasn1/modulefile b/Libraries/libtasn1/modulefile
new file mode 100644
index 0000000..6588af3
--- /dev/null
+++ b/Libraries/libtasn1/modulefile
@@ -0,0 +1,20 @@
+#%Module1.0
+
+module-whatis		"ASN.1 library"
+module-url		"https://www.gnu.org/software/libtasn1/"
+module-license		"GNU LGPL v2.1"
+module-maintainer	"Achim Gsell <achim.gsell@psi.ch>"
+
+module-help		"
+Libtasn1 is the ASN.1 library used by GnuTLS, p11-kit and some other
+packages. It was originally written by Fabio Fiorina, and now maintained
+as a GNU package.
+
+The goal of this implementation is to be highly portable, and only require
+an ANSI C99 platform.
+
+For status information on what's happening with the package, see the NEWS
+file from live sources.
+"
+
+append-path	PKG_CONFIG_PATH	$PREFIX/lib64/pkgconfig