diff --git a/dev-R/Matrix/Matrix-1.3.4.ebuild b/dev-R/Matrix/Matrix-1.3.4.ebuild
index 43162e67cf..5b7e412961 100644
--- a/dev-R/Matrix/Matrix-1.3.4.ebuild
+++ b/dev-R/Matrix/Matrix-1.3.4.ebuild
@@ -17,3 +17,8 @@ DEPEND="
 	virtual/lattice
 "
 RDEPEND="${DEPEND}"
+
+src_prepare() {
+	tc-export AR
+	R-packages_src_prepare
+}
diff --git a/dev-R/Matrix/metadata.xml b/dev-R/Matrix/metadata.xml
index 9a18f97bf2..b713210ff3 100644
--- a/dev-R/Matrix/metadata.xml
+++ b/dev-R/Matrix/metadata.xml
@@ -14,4 +14,13 @@
 		operations on these matrices, using 'LAPACK' and 'SuiteSparse'
 		libraries.
 	</longdescription>
+	<upstream>
+		<bugs-to>https://r-forge.r-project.org/tracker/?group_id=61</bugs-to>
+		<doc lang="en">https://cran.r-project.org/web/packages/Matrix/Matrix.pdf</doc>
+		<changelog>https://cran.r-project.org/web/packages/Matrix/ChangeLog</changelog>
+		<maintainer>
+			<name>Martin Maechler</name>
+			<email>mmaechler+Matrix@gmail.com</email>
+		</maintainer>
+	</upstream>
 </pkgmetadata>