diff --git a/ChangeLog b/ChangeLog
index 83d08a7b..48c076e3 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,6 +1,18 @@
 commit unknown
 Author: Thibaut Paumard <thibaut.paumard@obspm.fr>
-Date:   Tue Oct 25 15:15:04 2019 +0200
+Date:   Tue Oct 25 16:57:04 2019 +0200
+
+    Releasing 1.4.3
+
+commit 3708134bd0c822415d20c9dcb89bdd5ad6b2724e
+Author: Thibaut Paumard <thibaut.paumard@obspm.fr>
+Date:   Fri Oct 25 15:54:25 2019 +0200
+
+    m4/python.m4: bugfix (actually support Python >=3.8)
+
+commit c13df3d4f8fb5086ccca98097b1214279db2f33c
+Author: Thibaut Paumard <thibaut.paumard@obspm.fr>
+Date:   Fri Oct 25 15:24:05 2019 +0200
 
     Releasing 1.4.2
 
diff --git a/NEWS b/NEWS
index a6658c8d..915ed8e5 100644
--- a/NEWS
+++ b/NEWS
@@ -1,3 +1,6 @@
+1.4.3 2019/10/25 BUG
+   * m4/python.m4: bugfix (actually support Python >=3.8)
+
 1.4.2 2019/10/25 BUG
    * plugins/python: support Python 3.8
    * Astrobj::EquatorialHotSpot: fix XML compatibility code
diff --git a/configure b/configure
index 2f879521..ff3d8a06 100755
--- a/configure
+++ b/configure
@@ -1,6 +1,6 @@
 #! /bin/sh
 # Guess values for system-dependent variables and create Makefiles.
-# Generated by GNU Autoconf 2.69 for Gyoto 1.4.2.
+# Generated by GNU Autoconf 2.69 for Gyoto 1.4.3.
 #
 # Report bugs to <gyoto@sympa.obspm.fr>.
 #
@@ -590,8 +590,8 @@ MAKEFLAGS=
 # Identity of this package.
 PACKAGE_NAME='Gyoto'
 PACKAGE_TARNAME='gyoto'
-PACKAGE_VERSION='1.4.2'
-PACKAGE_STRING='Gyoto 1.4.2'
+PACKAGE_VERSION='1.4.3'
+PACKAGE_STRING='Gyoto 1.4.3'
 PACKAGE_BUGREPORT='gyoto@sympa.obspm.fr'
 PACKAGE_URL=''
 
@@ -1488,7 +1488,7 @@ 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 Gyoto 1.4.2 to adapt to many kinds of systems.
+\`configure' configures Gyoto 1.4.3 to adapt to many kinds of systems.
 
 Usage: $0 [OPTION]... [VAR=VALUE]...
 
@@ -1560,7 +1560,7 @@ fi
 
 if test -n "$ac_init_help"; then
   case $ac_init_help in
-     short | recursive ) echo "Configuration of Gyoto 1.4.2:";;
+     short | recursive ) echo "Configuration of Gyoto 1.4.3:";;
    esac
   cat <<\_ACEOF
 
@@ -1809,7 +1809,7 @@ fi
 test -n "$ac_init_help" && exit $ac_status
 if $ac_init_version; then
   cat <<\_ACEOF
-Gyoto configure 1.4.2
+Gyoto configure 1.4.3
 generated by GNU Autoconf 2.69
 
 Copyright (C) 2012 Free Software Foundation, Inc.
@@ -2508,7 +2508,7 @@ 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 Gyoto $as_me 1.4.2, which was
+It was created by Gyoto $as_me 1.4.3, which was
 generated by GNU Autoconf 2.69.  Invocation command line was
 
   $ $0 $@
@@ -3484,7 +3484,7 @@ fi
 
 # Define the identity of the package.
  PACKAGE='gyoto'
- VERSION='1.4.2'
+ VERSION='1.4.3'
 
 
 cat >>confdefs.h <<_ACEOF
@@ -21960,7 +21960,7 @@ 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 Gyoto $as_me 1.4.2, which was
+This file was extended by Gyoto $as_me 1.4.3, which was
 generated by GNU Autoconf 2.69.  Invocation command line was
 
   CONFIG_FILES    = $CONFIG_FILES
@@ -22026,7 +22026,7 @@ _ACEOF
 cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
 ac_cs_config="`$as_echo "$ac_configure_args" | sed 's/^ //; s/[\\""\`\$]/\\\\&/g'`"
 ac_cs_version="\\
-Gyoto config.status 1.4.2
+Gyoto config.status 1.4.3
 configured by $0, generated by GNU Autoconf 2.69,
   with options \\"\$ac_cs_config\\"
 
diff --git a/configure.ac b/configure.ac
index b709416b..cfd8415e 100644
--- a/configure.ac
+++ b/configure.ac
@@ -10,7 +10,7 @@ dnl without any warranty.
 
 
 AC_PREREQ([2.69])
-AC_INIT([Gyoto], [1.4.2], [gyoto@sympa.obspm.fr])
+AC_INIT([Gyoto], [1.4.3], [gyoto@sympa.obspm.fr])
 gyoto_test_CXXFLAGS=${CXXFLAGS+set}
 gyoto_test_CPPFLAGS=${CPPFLAGS+set}
 AC_CANONICAL_SYSTEM