diff --git a/academic/R/R.SlackBuild b/academic/R/R.SlackBuild
index 69d417c0c6..4b39db3d80 100644
--- a/academic/R/R.SlackBuild
+++ b/academic/R/R.SlackBuild
@@ -26,7 +26,7 @@
 cd $(dirname $0) ; CWD=$(pwd)
 
 PRGNAM=R
-VERSION=${VERSION:-4.1.2}
+VERSION=${VERSION:-4.1.3}
 BUILD=${BUILD:-1}
 TAG=${TAG:-_SBo}
 PKGTYPE=${PKGTYPE:-tgz}
@@ -62,10 +62,18 @@ TMP=${TMP:-/tmp/SBo}
 PKG=$TMP/package-$PRGNAM
 OUTPUT=${OUTPUT:-/tmp}
 
-# Abort build if architecture is not 64-bit.
-if [ "$ARCH" != "x86_64" ]; then
-  echo "$ARCH is not supported."
-  exit 1
+if [ "$ARCH" = "i586" ]; then
+  SLKCFLAGS="-O2 -march=i586 -mtune=i686"
+  LIBDIRSUFFIX=""
+elif [ "$ARCH" = "i686" ]; then
+  SLKCFLAGS="-O2 -march=i686 -mtune=i686"
+  LIBDIRSUFFIX=""
+elif [ "$ARCH" = "x86_64" ]; then
+  SLKCFLAGS="-O2 -fPIC"
+  LIBDIRSUFFIX="64"
+else
+  SLKCFLAGS="-O2"
+  LIBDIRSUFFIX=""
 fi
 
 set -e
diff --git a/academic/R/R.info b/academic/R/R.info
index e8d1b5df61..ef83594ebe 100644
--- a/academic/R/R.info
+++ b/academic/R/R.info
@@ -1,10 +1,10 @@
 PRGNAM="R"
-VERSION="4.1.2"
+VERSION="4.1.3"
 HOMEPAGE="https://www.r-project.org/"
-DOWNLOAD="UNSUPPORTED"
-MD5SUM=""
-DOWNLOAD_x86_64="https://cran.r-project.org/src/base/R-4/R-4.1.2.tar.gz"
-MD5SUM_x86_64="6e28db9d02c6d3dae51a149b8e261ab1"
+DOWNLOAD="https://cran.r-project.org/src/base/R-4/R-4.1.3.tar.gz"
+MD5SUM="409bc782b1a42c8247712f6446d7d640"
+DOWNLOAD_x86_64=""
+MD5SUM_x86_64=""
 REQUIRES=""
 MAINTAINER="Andrew Payne"
 EMAIL="phalange@komputermatrix.com"