diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..d3839a2
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1 @@
+/relaxngDatatype-2011.1.tar.gz
diff --git a/copying.txt b/copying.txt
new file mode 100644
index 0000000..1b86eab
--- /dev/null
+++ b/copying.txt
@@ -0,0 +1,30 @@
+Copyright (c) 2001, Thai Open Source Software Center Ltd, Sun Microsystems.
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are
+met:
+
+    Redistributions of source code must retain the above copyright
+    notice, this list of conditions and the following disclaimer.
+
+    Redistributions in binary form must reproduce the above copyright
+    notice, this list of conditions and the following disclaimer in
+    the documentation and/or other materials provided with the
+    distribution.
+
+    Neither the names of the copyright holders nor the names of its
+    contributors may be used to endorse or promote products derived
+    from this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR
+CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
diff --git a/relaxng-datatype-java.spec b/relaxng-datatype-java.spec
new file mode 100644
index 0000000..c7b53df
--- /dev/null
+++ b/relaxng-datatype-java.spec
@@ -0,0 +1,51 @@
+Name:           relaxng-datatype-java
+Version:        2011.1
+Release:        1%{?dist}
+Summary:        The relaxng datatype library for Java
+# License file is not present in the source repository, the file was retrieved
+# from SourceForge where the previous version is hosted
+# https://sourceforge.net/projects/relaxng/files/datatype%20%28java%29/Ver.1.0/relaxngDatatype-1.0.zip/download
+License:        BSD-3-Clause
+URL:            https://relaxng.org/
+BuildArch:      noarch
+ExclusiveArch:  %{java_arches} noarch
+
+Source0:        https://github.com/java-schema-utilities/%{name}/archive/refs/tags/relaxngDatatype-%{version}.tar.gz
+Source1:        copying.txt
+
+BuildRequires:  maven-local
+
+%description
+Interface between RELAX NG validators and datatype libraries.
+
+%package        javadoc
+Summary:        API documentation for %{name}
+
+%description    javadoc
+This package provides %{summary}.
+
+%prep
+%setup -q -n %{name}-relaxngDatatype-%{version}
+cp %{SOURCE1} .
+
+%pom_remove_parent
+
+%pom_xpath_remove 'pom:build/pom:extensions'
+
+%mvn_alias com.github.relaxng:relaxngDatatype relaxngDatatype:relaxngDatatype
+
+%build
+%mvn_build -- -Dmaven.compiler.release=8
+
+%install
+%mvn_install
+
+%files -f .mfiles
+%license copying.txt
+
+%files javadoc -f .mfiles-javadoc
+%license copying.txt
+
+%changelog
+* Mon Aug 07 2023 Marian Koncek <mkoncek@redhat.com> - 2011.1-1
+- Initial build
diff --git a/sources b/sources
new file mode 100644
index 0000000..9a4ab35
--- /dev/null
+++ b/sources
@@ -0,0 +1 @@
+SHA512 (relaxngDatatype-2011.1.tar.gz) = 8835cd7728aad10c1bb3e1b80f45e54699df8c502c1fbbbb0355b522bb591040116fa57f1495f1fecaf9a22174e0eebb55be5911cf29bf0eb9dce86be16a72bf