diff --git a/gis/mapnik/mapnik.SlackBuild b/gis/mapnik/mapnik.SlackBuild
index 233fa602b6..88c092525d 100644
--- a/gis/mapnik/mapnik.SlackBuild
+++ b/gis/mapnik/mapnik.SlackBuild
@@ -22,7 +22,7 @@
 # ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 PRGNAM=mapnik
-VERSION=${VERSION:-3.0.19}
+VERSION=${VERSION:-3.0.20}
 VARIANT=1.1.5
 BUILD=${BUILD:-1}
 TAG=${TAG:-_SBo}
@@ -65,6 +65,11 @@ rm -rf $PRGNAM-$VERSION
 tar xvf $CWD/$PRGNAM-$VERSION.tar.gz
 cd $PRGNAM-$VERSION
 
+# support build with current
+if [[ `icu-config --version` =~ ^61 ]] ; then
+  CUSTOM_DEFINES=-DU_USING_ICU_NAMESPACE=1
+fi
+
 # mapnik needs files from git submodule
 cd deps/mapbox
 tar xvf $CWD/variant-$VARIANT.tar.gz -C variant --strip-components 1
@@ -87,6 +92,7 @@ find -L . \
   LIBDIR_SCHEMA=lib$LIBDIRSUFFIX \
   SYSTEM_FONTS=/usr/share/fonts \
   INPUT_PLUGINS=sqlite,ogr,shape,geojson,gdal,pgraster,raster,topojson,postgis,csv \
+  CUSTOM_DEFINES="$CUSTOM_DEFINES" \
   DESTDIR=$PKG
 make install
 
diff --git a/gis/mapnik/mapnik.info b/gis/mapnik/mapnik.info
index 24c1d8806e..5c79cd1c2f 100644
--- a/gis/mapnik/mapnik.info
+++ b/gis/mapnik/mapnik.info
@@ -1,9 +1,9 @@
 PRGNAM="mapnik"
-VERSION="3.0.19"
+VERSION="3.0.20"
 HOMEPAGE="http://mapnik.org"
-DOWNLOAD="https://github.com/mapnik/mapnik/archive/v3.0.19/mapnik-3.0.19.tar.gz \
+DOWNLOAD="https://github.com/mapnik/mapnik/archive/v3.0.20/mapnik-3.0.20.tar.gz \
           https://github.com/mapbox/variant/archive/v1.1.5/variant-1.1.5.tar.gz"
-MD5SUM="6843eea05e7a6681217d024d5792182b \
+MD5SUM="2f319288e2ed89e0972fd5cc0389a397 \
         efeccaf1adb1da180983445020275c9c"
 DOWNLOAD_x86_64=""
 MD5SUM_x86_64=""