diff --git a/libraries/belle-sip/README b/libraries/belle-sip/README
index 61035eedc4..1f4bada577 100644
--- a/libraries/belle-sip/README
+++ b/libraries/belle-sip/README
@@ -1 +1 @@
-Belle-sip is a C object oriented SIP Stack.
+belle-sip is a C object oriented SIP Stack used by linphone.
diff --git a/libraries/belle-sip/belle-sip.SlackBuild b/libraries/belle-sip/belle-sip.SlackBuild
index b37b90d481..60a6869a5c 100644
--- a/libraries/belle-sip/belle-sip.SlackBuild
+++ b/libraries/belle-sip/belle-sip.SlackBuild
@@ -1,6 +1,6 @@
 #!/bin/sh
 
-# Slackware build script for ccrtp
+# Slackware build script for belle-sip
 # Was written by Euan Thoms <euan at potensol dot com>
 
 # Copyright 2014 Euan Thoms United Kingdom
@@ -24,13 +24,14 @@
 #  ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 PRGNAM=belle-sip
-VERSION=${VERSION:-1.4.2}
+VERSION=${VERSION:-1.6.3}
+SRCDIRNAM=${PRGNAM}-${VERSION}-0
 BUILD=${BUILD:-1}
 TAG=${TAG:-_SBo}
 
 if [ -z "$ARCH" ]; then
   case "$( uname -m )" in
-    i?86) ARCH=i486 ;;
+    i?86) ARCH=i586 ;;
     arm*) ARCH=arm ;;
       *) ARCH=$( uname -m ) ;;
   esac
@@ -41,8 +42,8 @@ TMP=${TMP:-/tmp/SBo}
 PKG=$TMP/package-$PRGNAM
 OUTPUT=${OUTPUT:-/tmp}
 
-if [ "$ARCH" = "i486" ]; then
-  SLKCFLAGS="-O2 -march=i486 -mtune=i686"
+if [ "$ARCH" = "i586" ]; then
+  SLKCFLAGS="-O2 -march=i586 -mtune=i686"
   LIBDIRSUFFIX=""
 elif [ "$ARCH" = "i686" ]; then
   SLKCFLAGS="-O2 -march=i686 -mtune=i686"
@@ -55,17 +56,21 @@ else
   LIBDIRSUFFIX=""
 fi
 
-DOCS="AUTHORS COPYING INSTALL NEWS README $CWD/$PRGNAM.SlackBuild"
+DOCS="AUTHORS COPYING ChangeLog NEWS README.md $CWD/$PRGNAM.SlackBuild"
 
 set -e
 
 rm -rf $PKG
 mkdir -p $TMP $PKG $OUTPUT
 cd $TMP
-rm -rf $PRGNAM-$VERSION
-tar xvf $CWD/$PRGNAM-$VERSION.tar.gz
-cp $CWD/antlr-*-complete.jar $PRGNAM-$VERSION/antlr.jar
-cd $PRGNAM-$VERSION
+rm -rf ${PRGNAM}-${VERSION}
+tar xvf $CWD/${PRGNAM}-${VERSION}.tar.gz
+if [ "${SRCDIRNAM}" != "${PRGNAM}-${VERSION}" ]
+then
+  mv ${SRCDIRNAM} ${PRGNAM}-${VERSION}
+fi
+cp $CWD/antlr-*-complete.jar ${PRGNAM}-${VERSION}/antlr.jar
+cd ${PRGNAM}-${VERSION}
 chown -R root:root .
 find -L . \
  \( -perm 777 -o -perm 775 -o -perm 750 -o -perm 711 -o -perm 555 \
@@ -73,7 +78,6 @@ find -L . \
  \( -perm 666 -o -perm 664 -o -perm 640 -o -perm 600 -o -perm 444 \
   -o -perm 440 -o -perm 400 \) -exec chmod 644 {} \;
 
-
 # Ensure java is in $PATH
 export PATH=$PATH:/usr/lib${LIBDIRSUFFIX}/java/bin
 
@@ -102,6 +106,7 @@ CPPFLAGS="${CPPFLAGS} -I/usr/include/antlr3" \
   --disable-silent-rules \
   --disable-static \
   --disable-tests \
+  --enable-tls \
   --with-antlr=/usr \
   --build=$ARCH-slackware-linux
 
diff --git a/libraries/belle-sip/belle-sip.info b/libraries/belle-sip/belle-sip.info
index 9f19d34a40..569fc87741 100644
--- a/libraries/belle-sip/belle-sip.info
+++ b/libraries/belle-sip/belle-sip.info
@@ -1,12 +1,12 @@
 PRGNAM="belle-sip"
-VERSION="1.4.2"
+VERSION="1.6.3"
 HOMEPAGE="http://www.linphone.org/technical-corner/belle-sip.html"
-DOWNLOAD="http://download.savannah.gnu.org/releases/linphone/belle-sip/belle-sip-1.4.2.tar.gz \
-	  http://github.com/antlr/website-antlr3/raw/gh-pages/download/antlr-3.4-complete.jar"
-MD5SUM="dbb58649225adefbad87241141fbea93 \
-	1b91dea1c7d480b3223f7c8a9aa0e172"
+DOWNLOAD="https://www.linphone.org/releases/sources/belle-sip/belle-sip-1.6.3.tar.gz \
+          https://github.com/antlr/website-antlr3/raw/gh-pages/download/antlr-3.4-complete.jar"
+MD5SUM="90c40812d98671ad2f40621542500bc6 \
+        1b91dea1c7d480b3223f7c8a9aa0e172"
 DOWNLOAD_x86_64=""
 MD5SUM_x86_64=""
-REQUIRES="libantlr3c jdk"
+REQUIRES="bctoolbox jdk libantlr3c mbedtls"
 MAINTAINER="Euan Thoms"
 EMAIL="euan at potensol dot com"
diff --git a/libraries/belle-sip/slack-desc b/libraries/belle-sip/slack-desc
index b764e7816e..1ae0797e4d 100644
--- a/libraries/belle-sip/slack-desc
+++ b/libraries/belle-sip/slack-desc
@@ -8,9 +8,9 @@
          |-----handy-ruler------------------------------------------------------|
 belle-sip: belle-sip (A Voice-over-IP phone)
 belle-sip:
-belle-sip: Belle-sip is a C object oriented SIP Stack.
+belle-sip: Belle-SIP is a C object oriented SIP Stack used by Linphone.
 belle-sip:
-belle-sip: http://www.linphone.org/
+belle-sip: http://www.linphone.org/technical-corner/belle-sip/overview
 belle-sip:
 belle-sip:
 belle-sip: