diff --git a/en_US.ISO8859-1/books/porters-handbook/book.sgml b/en_US.ISO8859-1/books/porters-handbook/book.sgml
index c508669cb3..c39a6a9bd1 100644
--- a/en_US.ISO8859-1/books/porters-handbook/book.sgml
+++ b/en_US.ISO8859-1/books/porters-handbook/book.sgml
@@ -5970,6 +5970,12 @@ _DOCSDIR=       .
 	      <entry>Dependency line for numeric extension.</entry>
 	    </row>
 
+	    <row>
+	      <entry><makevar>PYNUMPY</makevar></entry>
+	      <entry>Dependency line for the new numeric extension, numpy.
+	      (PYNUMERIC is deprecated by upstream vendor).</entry>
+	    </row>
+
 	    <row>
 	      <entry><makevar>PYXML</makevar></entry>