diff --git a/DESCRIPTION b/DESCRIPTION
index f0adf342367e11c04145793180221ee3152f12ff..93712412077adf4be80ef43b4f9c07379e0f989b 100644
--- a/DESCRIPTION
+++ b/DESCRIPTION
@@ -1,8 +1,8 @@
 Package: glpkAPI
 Type: Package
 Title: R Interface to C API of GLPK
-Version: 1.3.1
-Date: 2018-09-13
+Version: 1.3.2
+Date: 2020-02-13
 Authors@R: c(person("Mayo", "Roettger", email = "mayo.roettger@hhu.de", role = "cre"),
     person("Gabriel", "Gelius-Dietrich", role = "aut", email = "geliudie@uni-duesseldorf.de"),
     person("Louis", "Luangkesorn", email = "lugerpitt@gmail.com", role = "ctb" ))
@@ -13,7 +13,7 @@ SystemRequirements: GLPK (>= 4.42)
 License: GPL-3
 LazyLoad: yes
 Collate: generics.R glpk_ptrClass.R glpk.R glpkAPI.R zzz.R
-Packaged: 2018-09-13 14:05:00 UTC; mayo
+Packaged: 2020-02-13 10:30:00 UTC; mayo
 NeedsCompilation: yes
 Repository: CRAN
-Date/Publication: 2018-09-13 14:05:00
+Date/Publication: 2020-02-13 11:30:00
diff --git a/configure b/configure
index a6599ebf91db2bab0497e342c471a84fecdef49d..31d474ea3977b4ebe92ea96fdb843dd356bce44e 100755
--- a/configure
+++ b/configure
@@ -1,8 +1,8 @@
 #! /bin/sh
 # Guess values for system-dependent variables and create Makefiles.
-# Generated by GNU Autoconf 2.69 for glpkAPI 1.2.12.
+# Generated by GNU Autoconf 2.69 for glpkAPI 1.3.2.
 #
-# Report bugs to <geliudie@uni-duesseldorf.de>.
+# Report bugs to <mayo.roettger@hhu.de>.
 #
 #
 # Copyright (C) 1992-1996, 1998-2012 Free Software Foundation, Inc.
@@ -267,10 +267,10 @@ fi
     $as_echo "$0: be upgraded to zsh 4.3.4 or later."
   else
     $as_echo "$0: Please tell bug-autoconf@gnu.org and
-$0: geliudie@uni-duesseldorf.de about your system,
-$0: including any error possibly output before this
-$0: message. Then install a modern shell, or manually run
-$0: the script under such a shell if you do have one."
+$0: mayo.roettger@hhu.de about your system, including any
+$0: error possibly output before this message. Then install
+$0: a modern shell, or manually run the script under such a
+$0: shell if you do have one."
   fi
   exit 1
 fi
@@ -580,9 +580,9 @@ MAKEFLAGS=
 # Identity of this package.
 PACKAGE_NAME='glpkAPI'
 PACKAGE_TARNAME='glpkapi'
-PACKAGE_VERSION='1.2.12'
-PACKAGE_STRING='glpkAPI 1.2.12'
-PACKAGE_BUGREPORT='geliudie@uni-duesseldorf.de'
+PACKAGE_VERSION='1.3.2'
+PACKAGE_STRING='glpkAPI 1.3.2'
+PACKAGE_BUGREPORT='mayo.roettger@hhu.de'
 PACKAGE_URL=''
 
 # Factoring default headers for most tests.
@@ -656,6 +656,7 @@ infodir
 docdir
 oldincludedir
 includedir
+runstatedir
 localstatedir
 sharedstatedir
 sysconfdir
@@ -730,6 +731,7 @@ datadir='${datarootdir}'
 sysconfdir='${prefix}/etc'
 sharedstatedir='${prefix}/com'
 localstatedir='${prefix}/var'
+runstatedir='${localstatedir}/run'
 includedir='${prefix}/include'
 oldincludedir='/usr/include'
 docdir='${datarootdir}/doc/${PACKAGE_TARNAME}'
@@ -982,6 +984,15 @@ do
   | -silent | --silent | --silen | --sile | --sil)
     silent=yes ;;
 
+  -runstatedir | --runstatedir | --runstatedi | --runstated \
+  | --runstate | --runstat | --runsta | --runst | --runs \
+  | --run | --ru | --r)
+    ac_prev=runstatedir ;;
+  -runstatedir=* | --runstatedir=* | --runstatedi=* | --runstated=* \
+  | --runstate=* | --runstat=* | --runsta=* | --runst=* | --runs=* \
+  | --run=* | --ru=* | --r=*)
+    runstatedir=$ac_optarg ;;
+
   -sbindir | --sbindir | --sbindi | --sbind | --sbin | --sbi | --sb)
     ac_prev=sbindir ;;
   -sbindir=* | --sbindir=* | --sbindi=* | --sbind=* | --sbin=* \
@@ -1119,7 +1130,7 @@ fi
 for ac_var in	exec_prefix prefix bindir sbindir libexecdir datarootdir \
 		datadir sysconfdir sharedstatedir localstatedir includedir \
 		oldincludedir docdir infodir htmldir dvidir pdfdir psdir \
-		libdir localedir mandir
+		libdir localedir mandir runstatedir
 do
   eval ac_val=\$$ac_var
   # Remove trailing slashes.
@@ -1232,7 +1243,7 @@ if test "$ac_init_help" = "long"; then
   # Omit some internal or obsolete options to make the list less imposing.
   # This message is too long to be a string in the A/UX 3.1 sh.
   cat <<_ACEOF
-\`configure' configures glpkAPI 1.2.12 to adapt to many kinds of systems.
+\`configure' configures glpkAPI 1.3.2 to adapt to many kinds of systems.
 
 Usage: $0 [OPTION]... [VAR=VALUE]...
 
@@ -1272,6 +1283,7 @@ Fine tuning of the installation directories:
   --sysconfdir=DIR        read-only single-machine data [PREFIX/etc]
   --sharedstatedir=DIR    modifiable architecture-independent data [PREFIX/com]
   --localstatedir=DIR     modifiable single-machine data [PREFIX/var]
+  --runstatedir=DIR       modifiable per-process data [LOCALSTATEDIR/run]
   --libdir=DIR            object code libraries [EPREFIX/lib]
   --includedir=DIR        C header files [PREFIX/include]
   --oldincludedir=DIR     C header files for non-gcc [/usr/include]
@@ -1293,7 +1305,7 @@ fi
 
 if test -n "$ac_init_help"; then
   case $ac_init_help in
-     short | recursive ) echo "Configuration of glpkAPI 1.2.12:";;
+     short | recursive ) echo "Configuration of glpkAPI 1.3.2:";;
    esac
   cat <<\_ACEOF
 
@@ -1325,7 +1337,7 @@ Some influential environment variables:
 Use these variables to override the choices made by `configure' or to help
 it to find libraries and programs with nonstandard names/locations.
 
-Report bugs to <geliudie@uni-duesseldorf.de>.
+Report bugs to <mayo.roettger@hhu.de>.
 _ACEOF
 ac_status=$?
 fi
@@ -1388,7 +1400,7 @@ fi
 test -n "$ac_init_help" && exit $ac_status
 if $ac_init_version; then
   cat <<\_ACEOF
-glpkAPI configure 1.2.12
+glpkAPI configure 1.3.2
 generated by GNU Autoconf 2.69
 
 Copyright (C) 2012 Free Software Foundation, Inc.
@@ -1547,9 +1559,9 @@ $as_echo "$as_me: WARNING: $2: see the Autoconf documentation" >&2;}
 $as_echo "$as_me: WARNING: $2:     section \"Present But Cannot Be Compiled\"" >&2;}
     { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: $2: proceeding with the compiler's result" >&5
 $as_echo "$as_me: WARNING: $2: proceeding with the compiler's result" >&2;}
-( $as_echo "## ------------------------------------------ ##
-## Report this to geliudie@uni-duesseldorf.de ##
-## ------------------------------------------ ##"
+( $as_echo "## ----------------------------------- ##
+## Report this to mayo.roettger@hhu.de ##
+## ----------------------------------- ##"
      ) | sed "s/^/$as_me: WARNING:     /" >&2
     ;;
 esac
@@ -1757,7 +1769,7 @@ cat >config.log <<_ACEOF
 This file contains any messages produced by compilers while
 running configure, to aid debugging if configure makes a mistake.
 
-It was created by glpkAPI $as_me 1.2.12, which was
+It was created by glpkAPI $as_me 1.3.2, which was
 generated by GNU Autoconf 2.69.  Invocation command line was
 
   $ $0 $@
@@ -2117,7 +2129,6 @@ if test -z "${R_HOME}"; then
 fi
 
 CC=`"${R_HOME}/bin/R" CMD config CC`
-CPP=`"${R_HOME}/bin/R" CMD config CPP`
 CFLAGS=`"${R_HOME}/bin/R" CMD config CFLAGS`
 CPPFLAGS=`"${R_HOME}/bin/R" CMD config CPPFLAGS`
 ac_ext=c
@@ -4166,7 +4177,7 @@ cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1
 # report actual input values of CONFIG_FILES etc. instead of their
 # values after options handling.
 ac_log="
-This file was extended by glpkAPI $as_me 1.2.12, which was
+This file was extended by glpkAPI $as_me 1.3.2, which was
 generated by GNU Autoconf 2.69.  Invocation command line was
 
   CONFIG_FILES    = $CONFIG_FILES
@@ -4222,13 +4233,13 @@ $config_files
 Configuration headers:
 $config_headers
 
-Report bugs to <geliudie@uni-duesseldorf.de>."
+Report bugs to <mayo.roettger@hhu.de>."
 
 _ACEOF
 cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
 ac_cs_config="`$as_echo "$ac_configure_args" | sed 's/^ //; s/[\\""\`\$]/\\\\&/g'`"
 ac_cs_version="\\
-glpkAPI config.status 1.2.12
+glpkAPI config.status 1.3.2
 configured by $0, generated by GNU Autoconf 2.69,
   with options \\"\$ac_cs_config\\"
 
diff --git a/configure.ac b/configure.ac
index 2077c28b35fb66a34546810099220c264a7ca99c..5e4e0ea9d3d38ce8613c82838385ee3a19db4105 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1,4 +1,4 @@
-AC_INIT([glpkAPI], [1.2.12], [geliudie@uni-duesseldorf.de])
+AC_INIT([glpkAPI], [1.3.2], [mayo.roettger@hhu.de])
 
 
 dnl # --------------------------------------------------------------------
@@ -22,7 +22,6 @@ fi
 
 dnl # GNU R default settings
 CC=`"${R_HOME}/bin/R" CMD config CC`
-CPP=`"${R_HOME}/bin/R" CMD config CPP`
 CFLAGS=`"${R_HOME}/bin/R" CMD config CFLAGS`
 CPPFLAGS=`"${R_HOME}/bin/R" CMD config CPPFLAGS`
 AC_PROG_CC
diff --git a/inst/NEWS.Rd b/inst/NEWS.Rd
index 65f7d13ab107afea15328a934f813bf0a7078477..f105d72a3d7ee2563fd74e12d397a98def77af40 100644
--- a/inst/NEWS.Rd
+++ b/inst/NEWS.Rd
@@ -4,6 +4,13 @@
 \title{glpkAPI News}
 \encoding{UTF-8}
 
+% ---------------------------------------------------------------------------- %
+\section{Changes in version 1.3.2 2020-02-13}{
+  \itemize{
+    \item Quick fix for CRAN issue: 'config' variable 'CPP' is deprecated.
+  }
+}
+
 % ---------------------------------------------------------------------------- %
 \section{Changes in version 1.3.1 2018-09-13}{
   \itemize{