diff --git a/.gitignore b/.gitignore
index ebca39b..9a0c683 100644
--- a/.gitignore
+++ b/.gitignore
@@ -4,3 +4,4 @@
 /liblangtag-0.5.1.tar.bz2
 /liblangtag-0.5.2.tar.bz2
 /liblangtag-0.5.3.tar.bz2
+/language-subtag-registry-2014-03-27.tar.xz
diff --git a/liblangtag.spec b/liblangtag.spec
index 25b7364..37974de 100644
--- a/liblangtag.spec
+++ b/liblangtag.spec
@@ -7,6 +7,8 @@ Group: System Environment/Libraries
 License: (LGPLv3+ or MPLv2.0) and UCD
 URL: http://tagoh.bitbucket.org/liblangtag/
 Source0: https://bitbucket.org/tagoh/%{name}/downloads/%{name}-%{version}.tar.bz2
+# file downloaded from https://www.iana.org/assignments/language-subtag-registry/language-subtag-registry
+Source1: language-subtag-registry-2014-03-27.tar.xz
 
 BuildRequires: glibc-common
 BuildRequires: gtk-doc
@@ -51,7 +53,7 @@ BuildArch: noarch
 The %{name}-doc package contains documentation files for %{name}.
 
 %prep
-%setup -q
+%setup -q -a 1
 
 %build
 %configure --disable-static --enable-shared --disable-introspection
diff --git a/sources b/sources
index 32518ee..af33474 100644
--- a/sources
+++ b/sources
@@ -1 +1,2 @@
 c9ed5fed6160f6bd2108e5f4f1cb7f6d  liblangtag-0.5.3.tar.bz2
+6c4a14f3401d63c90e1a9bea5ce2e799  language-subtag-registry-2014-03-27.tar.xz