diff --git a/Libraries/zlib/build b/Libraries/zlib/build
new file mode 100755
index 0000000..c007ed2
--- /dev/null
+++ b/Libraries/zlib/build
@@ -0,0 +1,6 @@
+#!/usr/bin/env modbuild
+
+pbuild::set_download_url https://zlib.net/$P-${V_PKG}.tar.gz
+pbuild::add_to_group 'Libraries'
+
+pbuild::install_docfiles 'README'
diff --git a/Libraries/zlib/files/variants b/Libraries/zlib/files/variants
new file mode 100644
index 0000000..de4b821
--- /dev/null
+++ b/Libraries/zlib/files/variants
@@ -0,0 +1 @@
+zlib/1.2.11	unstable
diff --git a/Libraries/zlib/modulefile b/Libraries/zlib/modulefile
new file mode 100644
index 0000000..e2ea8b5
--- /dev/null
+++ b/Libraries/zlib/modulefile
@@ -0,0 +1,15 @@
+#%Module1.0
+
+module-whatis		"compression library"
+module-url		"http://zlib.net/"
+module-license		"BSD like, see $PREFIX/share/doc/zlib/README"
+module-maintainer	"Achim Gsell <achim.gsell@psi.ch>"
+
+module-help		"
+zlib 1.2.11 is a general purpose data compression library.  All the code is
+thread safe.  The data format used by the zlib library is described by RFCs
+(Request for Comments) 1950 to 1952 in the files
+http://tools.ietf.org/html/rfc1950 (zlib format), rfc1951 (deflate format) and
+rfc1952 (gzip format).
+"
+