diff --git a/jaxb.spec b/jaxb.spec
index 48a7ac9..ba7a4ff 100644
--- a/jaxb.spec
+++ b/jaxb.spec
@@ -3,7 +3,7 @@
 
 Name:           jaxb
 Version:        2.3.3
-Release:        5%{?dist}
+Release:        6%{?dist}
 Summary:        JAXB Reference Implementation
 # EDL-1.0 license is BSD-3-clause
 License:        BSD
@@ -188,6 +188,11 @@ input.
 
 %package relaxng-datatype
 Summary:        RelaxNG Datatype
+# RelaxNG was subsumed into jaxb upstream
+Provides:       relaxngDatatype = 1:%{version}-%{release}
+Obsoletes:      relaxngDatatype < 2011.1-16
+Provides:       relaxngDatatype-javadoc = 1:%{version}-%{release}
+Obsoletes:      relaxngDatatype-javadoc < 2011.1-16
 
 %description relaxng-datatype
 RelaxNG Datatype library.
@@ -256,6 +261,7 @@ rm xjc/src/test/java/com/sun/tools/xjc/addon/code_injector/PluginImplTest.java
 %mvn_alias org.glassfish.jaxb:jaxb-xjc "com.sun.xml.bind:jaxb-xjc"
 %mvn_alias org.glassfish.jaxb:jaxb-runtime org.glassfish.jaxb:jaxb-core
 %mvn_alias org.glassfish.jaxb:xsom com.sun.xsom:xsom
+%mvn_alias com.sun.xml.bind.external:relaxng-datatype com.github.relaxng:relaxngDatatype relaxngDatatype:relaxngDatatype
 
 # Don't install aggregator and parent poms
 %mvn_package com.sun.xml.bind.mvn: __noinstall
@@ -316,6 +322,9 @@ popd
 %endif
 
 %changelog
+* Fri Feb  5 2021 Mat Booth <mat.booth@redhat.com> - 2.3.3-6
+- Add obsoletes/provides and compat aliases for old relaxngDatatype package
+
 * Tue Jan 26 2021 Fedora Release Engineering <releng@fedoraproject.org> - 2.3.3-5
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_34_Mass_Rebuild