diff --git a/tax-treatment-NS0-v1.dtd b/tax-treatment-NS0-v1.dtd
index 5ca4213..8fe0561 100644
--- a/tax-treatment-NS0-v1.dtd
+++ b/tax-treatment-NS0-v1.dtd
@@ -305,7 +305,8 @@ Laura Kelly, Jeff Beck.
              %XLINK.xmlns.attrib;
              %MATHML.xmlns.attrib;
              %ali.xmlns.attrib;
-             %Schema.xmlns.attrib;"                                  >
+             %Schema.xmlns.attrib;                                  
+             %taxpub-namespace-att;" >
 
 
 <!--                    BACK ATTRIBUTES                            -->
@@ -550,4 +551,4 @@ Laura Kelly, Jeff Beck.
              %response-atts;                                         >
 
 
-<!-- ================== End Journal Publishing DTD =============== -->
\ No newline at end of file
+<!-- ================== End Journal Publishing DTD =============== -->